Patent Explorer

Browse, filter, and analyze 10 patents across global jurisdictions.

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Patent Number Title Assignee Status Filing Date Grant Date Expires Remaining Claims Actions
US3878339A Reference station failure in a TDMA system International Telecommunications Satellite Organization Expired / Lapsed 1973-12-18 1975-04-15 1993-12-18 0.0 yrs 10
US3816666A System for changing the burst format in a tdma communication system International Telecommunications Satellite Organization Expired / Lapsed 1972-10-02 1974-06-11 1992-10-02 0.0 yrs 19
US3813496A Tdma bursts acquisition system International Telecommunications Satellite Organization Expired / Lapsed 1972-10-02 1974-05-28 1992-10-02 0.0 yrs 11
US3755624A Pcm-tv system using a unique word for horizontal time synchronization International Telecommunications Satellite Organization Expired / Lapsed 1971-04-22 1973-08-28 1991-04-22 0.0 yrs 13
US3683116A Terrestrial interface unit International Telecommunications Satellite Organization Expired / Lapsed 1969-07-16 1972-08-08 1989-07-16 0.0 yrs 10
US3654395A Synchronization of tdma space division satellite system International Telecommunications Satellite Organization Expired / Lapsed 1969-10-15 1972-04-04 1989-10-15 0.0 yrs 8
US3649764A Variable burst length tdma system International Telecommunications Satellite Organization Expired / Lapsed 1969-10-15 1972-03-14 1989-10-15 0.0 yrs 13
US3542956A Pcm telephone communication system International Telecommunications Satellite Organization Expired / Lapsed 1967-05-31 1970-11-24 1987-05-31 0.0 yrs 0
US3530252A Acquisition technique for time division multiple access satellite communication system International Telecommunications Satellite Organization Expired / Lapsed 1966-11-16 1970-09-22 1986-11-16 0.0 yrs 0
US3526719A Double aperture technique for detecting station identifying signal in a time division multiple access satellite communication system International Telecommunications Satellite Organization Expired / Lapsed 1966-11-17 1970-09-01 1986-11-17 0.0 yrs 0