United States Patent and Trademark Office, Patent Assignment 6721/496:
A Re-record Of An Assignment Previously Recorded On March 18, 1993 At Reel 6460, Frame 0762 To Correct The Patent Numbers.

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Assignor
Assignee

International Mobile Machines Corporation
Paperwork Executed February 18, 1993

Transfer

Recorded
October 13, 1993

No Logo

Interdigital Technology Corporation

Interdigital Technology Corporation
2nd Street
Wilmington, DE 19801

Patents
Correspondent

USX0Patent Application No. 05626021, Filed None

USB1Utility Patent No. 4006316, Issued None

USX0Patent Application No. 05610127, Filed None

USB1Utility Patent No. 4001708, Issued None

USX0Patent Application No. 05715065, Filed None

USB1Utility Patent No. 4081130, Issued None

Portable Telephone System

USX0Patent Application No. 05755615, Filed December 29, 1976

USB1Utility Patent No. 4130731, Issued December 19, 1978

Tone Detector

USX0Patent Application No. 05951734, Filed October 16, 1978

USB1Utility Patent No. 4211938, Issued July 8, 1980

Monostable System

USX0Patent Application No. 05951736, Filed October 16, 1978

USB1Utility Patent No. 4263556, Issued April 21, 1981

Power Supply System

USX0Patent Application No. 05951737, Filed October 16, 1978

USB1Utility Patent No. 4272650, Issued June 9, 1981

Sound-activated Code-controlled Detection System For Telephones And The Like

USX0Patent Application No. 06343445, Filed January 28, 1982

USB1Utility Patent No. 4439638, Issued March 27, 1984

Rotary Dial Decoder

USX0Patent Application No. 06371808, Filed April 26, 1982

USB1Utility Patent No. 4446339, Issued May 1, 1984

Code Attachment Housing For A Telephone Stand

USX0Patent Application No. 06396874, Filed July 9, 1982

USB1Utility Patent No. D279003, Issued May 28, 1985

Handset Telephone Unit

USX0Patent Application No. 06535242, Filed September 23, 1983

USB1Utility Patent No. D285197, Issued August 19, 1986

Handset Telephone Unit

USX0Patent Application No. 06535228, Filed September 23, 1983

USB1Utility Patent No. D285200, Issued August 19, 1986

Frequency Synthesizer For Broadcast Telephone System Having Multiple Assignable Frequency Channels

USX0Patent Application No. 06840908, Filed March 18, 1986

USB1Utility Patent No. 4785260, Issued November 15, 1988

Modem For Rf Subscriber Telephone System

USX0Patent Application No. 06920230, Filed November 24, 1986

USB1Utility Patent No. 4764940, Issued August 16, 1988

Connection Of Subscriber Communication Network Base Station To External Information Network

USX0Patent Application No. 06921656, Filed October 21, 1986

USB1Utility Patent No. 4779262, Issued October 18, 1988

Base Station For Wireless Digital Telephone System

USX0Patent Application No. 07071279, Filed August 14, 1987

USB1Utility Patent No. 4777633, Issued October 11, 1988

Apparatus And Method For Obtaining Frequency Agility In Digital Communication Systems

USX0Patent Application No. 07082238, Filed August 6, 1987

USB1Utility Patent No. 4785450, Issued November 15, 1988

Initialization Of Communication Channel Between A Subscriber Station And A Base Station In A Subscriber Communication System

USX0Patent Application No. 07070970, Filed July 8, 1987

USB1Utility Patent No. 4811420, Issued March 7, 1989

Base Station Emulator

USX0Patent Application No. 07123395, Filed November 20, 1987

USB1Utility Patent No. 4935927, Issued June 19, 1990

Frequency Synthesizer For Broadcast Telephone System Having Multiple Assignable Frequency Channels

USX0Patent Application No. 07211758, Filed June 27, 1988

USB1Utility Patent No. 4862107, Issued August 29, 1989

Band-pass Filter And Support Structure Therefor

USX0Patent Application No. 07247381, Filed September 21, 1988

USB1Utility Patent No. 4940956, Issued July 10, 1990

A Deglitching Means For Digital Communication System

USX0Patent Application No. 07256416, Filed October 12, 1988

USB1Utility Patent No. 4996697, Issued February 26, 1991

Digital Signals And Frequency Correction In A Digital Wireless System

USX0Patent Application No. 07256415, Filed October 12, 1988

USB1Utility Patent No. 4893317, Issued January 9, 1990

Subscriber Unit For Wireless Digital Telephone System

USX0Patent Application No. 07256577, Filed October 12, 1988

USB1Utility Patent No. 5177741, Issued January 5, 1993

An Equalizer Circuit For Digital Systems

USX0Patent Application No. 07256557, Filed October 12, 1988

USB1Utility Patent No. 4881240, Issued November 14, 1989

Digital Time- Multiplexed Quadrature Frequency Upconverter

USX0Patent Application No. 07256420, Filed October 12, 1988

USB1Utility Patent No. 5101418, Issued March 31, 1992

Subscriber Unit For Wireless Digital Telephone System

USX0Patent Application No. 07256579, Filed October 12, 1988

USB1Utility Patent No. 4994802, Issued February 19, 1991

Subscriber Unit For Wireless Digital Telephone System

USX0Patent Application No. 07256580, Filed October 12, 1988

USB1Utility Patent No. 4943983, Issued July 24, 1990

Combination Spatial Diversity System

USX0Patent Application No. 07281186, Filed December 8, 1988

USB1Utility Patent No. 4953197, Issued August 28, 1990

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 07324651, Filed March 16, 1989

USB1Utility Patent No. 4912705, Issued March 27, 1990

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 07349301, Filed May 8, 1989

USB1Utility Patent No. 5022024, Issued June 4, 1991

Communication Signal Compression System And Method

USX0Patent Application No. 07369292, Filed June 21, 1989

USB1Utility Patent No. 4974099, Issued November 27, 1990

Communication Signal Compression System And Method

USX0Patent Application No. 07617789, Filed November 26, 1990

USB1Utility Patent No. 5072308, Issued December 10, 1991

Interpolator For Varying A Signal Sampling Rate

USX0Patent Application No. 07419501, Filed October 10, 1989

USB1Utility Patent No. 5067141, Issued November 19, 1991

Subscriber Unit For Wireless Digital Subscriber Communication System

USX0Patent Application No. 07394497, Filed August 14, 1989

USB1Utility Patent No. 5008900, Issued April 16, 1991

Subscriber Unit For Wireless Digital Subscriber Communication System

USX0Patent Application No. 07658065, Filed February 20, 1991

USB1Utility Patent No. 5146473, Issued September 8, 1992

Automatic Adaptive Equalizer

USX0Patent Application No. 07433995, Filed November 9, 1989

USB1Utility Patent No. 5168507, Issued December 1, 1992

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 07439100, Filed November 20, 1989

USB1Utility Patent No. 5121391, Issued June 9, 1992

Frequency Synthesizer Circuit

USX0Patent Application No. 07853334, Filed March 13, 1992

USB1Utility Patent No. 5159705, Issued October 27, 1992

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 07634770, Filed December 27, 1990

USB1Utility Patent No. 5119375, Issued June 2, 1992

Modem For Rf Subscriber Telephone System

USX0Patent Application No. 06713923, Filed March 20, 1985

USB1Utility Patent No. 4644561, Issued February 17, 1987

Subscriber Unit For Wireless Digital Telephone System

USX0Patent Application No. 06893916, Filed August 7, 1986

USB1Utility Patent No. 4825448, Issued April 25, 1989

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 07031045, Filed March 27, 1987

USB1Utility Patent No. 4817089, Issued March 28, 1989

Subscriber Rf Telephone System For Providing Multiple Speech And/or Data Signals Simultaneously Over Either A Single Or A Plurality Of Rf Channels

USX0Patent Application No. 06713925, Filed March 20, 1985

USB1Utility Patent No. 4675863, Issued June 23, 1987

ROBERT S. BRAMSIN

Updated July 29, 1999

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