Assignee

TANDY ELECTRONICS JAPAN LTD

JP·4 granted patents·69 citations·filing 1987–1989

Technology mixH04M4

Top patents by PatentIndex Score

4 records

0171US4802207AVoltage-sensitive telephone line monitorTANDY ELECTRONICS JAPAN LTD·Filed 1987·Granted Jan 31, 1989·35 cites·12 claims
0252US5063589AAutomatic telephone answering machine with ring signal responsive mode changing arrangementTANDY ELECTRONICS JAPAN LTD·Filed 1989·Granted Nov 5, 1991·19 cites·1 claims
0341US5010567ARecorder control apparatus for automatic telephone answering systemTANDY ELECTRONICS JAPAN LTD·Filed 1988·Granted Apr 23, 1991·11 cites·17 claims
0425US4800584AIndex device for automatic information retrievalTANDY ELECTRONICS JAPAN LTD·Filed 1987·Granted Jan 24, 1989·4 cites·2 claims

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