Patent Explorer

Browse, filter, and analyze 4 patents across global jurisdictions.

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Patent Number Title Assignee Status Filing Date Grant Date Expires Remaining Claims Actions
US3586781A Telecommunication apparatus TECHNOLOGY UK Expired / Lapsed 1970-05-19 1971-06-22 1990-05-19 0.0 yrs 15
US3555423A Modulation control circuits for delta-modulation telecommunication systems TECHNOLOGY UK Expired / Lapsed 1968-02-06 1971-01-12 1988-02-06 0.0 yrs 0
US3533236A Engine fuel supply servo systems TECHNOLOGY UK Expired / Lapsed 1969-01-15 1970-10-13 1989-01-15 0.0 yrs 0
US3531777A Synchronising arrangements in digital communications systems TECHNOLOGY UK Expired / Lapsed 1968-10-03 1970-09-29 1988-10-03 0.0 yrs 0