Patent assignee · US · COMPANY

GTE Automatic Electric Labs Inc.

108Patents
0Active
108Granted
39Portfolio score

Filing activity: Sep 22, 1978 → Dec 19, 1983

Most-cited patents

PatentTitleAreaCited byStatus
US4399499A Bi-lateral four quadrant power converter Emerging Cross-Sectional Technologies 71 Expired
US4322817A Switching regulated pulse width modulated push-pull converter Electricity 50 Expired
USD262207S Hand held telephone set General 33 Expired
US4395591A Arrangement for supporting a telephone handset or the like Electricity 31 Expired
US4360268A Method and apparatus for measuring the insertion loss of a splice in an optical fiber Physics 26 Expired
US4412342A Clock synchronization system Electricity 25 Expired
US4322580A Clock selection circuit Physics 25 Expired
US4445211A Arrangement for multiple custom calling Electricity 25 Expired
USD259421S Telephone instrument base General 24 Expired
US4394703A Load protecting arrangement Electricity 24 Expired
US4334134A Identification cap actuator assembly Electricity 23 Expired
US4413335A Fault recovery apparatus for a PCM switching network Electricity 22 Expired
US4374413A Arbitration controller providing for access of a common resource by a plurality of central processing units Physics 22 Expired
US4360722A Designation cap actuator assembly Electricity 20 Expired
US4374414A Arbitration controller providing for access of a common resource by a duplex plurality of central processing units Physics 20 Expired
US4395753A Allocation controller providing for access of multiple common resources by a plurality of central processing units Physics 20 Expired
US4308472A Clock check circuit Electricity 19 Expired
US4374361A Clock failure monitor circuit employing counter pair to indicate clock failure within two pulses Physics 19 Expired
US4363096A Arbitration controller providing for access of a common resource by a duplex plurality of central processing units Physics 19 Expired
US4412282A Microprocessor control circuit Electricity 18 Expired
US4394728A Allocation controller providing for access of multiple common resources by a duplex plurality of central processing units Physics 18 Expired
USD261509S Wall mounted holder for a telephone set General 18 Expired
US4314164A Computer channel access circuit for multiple input-output devices Physics 18 Expired
US4439805A Low voltage protection circuit Electricity 17 Expired
US4362957A Clock pulse tolerance verification circuit Electricity 16 Expired

Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.