Assignee
ANSAFONE LTD
4 granted patents·40 citations·filing 1975–1977
Top patents by PatentIndex Score
4 records- 0174US4074081AApparatus for detecting the level of direct current or voltage on a telephone lineANSAFONE LTD·Filed 1976·Granted Feb 14, 1978·29 cites·16 claims
- 0256US4004276ATelephone answering machinesANSAFONE LTD·Filed 1975·Granted Jan 18, 1977·9 cites·14 claims
- 0325US4134141ARecording and reproducing meansANSAFONE LTD·Filed 1977·Granted Jan 9, 1979·0 cites·6 claims
- 0417US4105866ATelephone answering machine busy signal detection devices with switching meansANSAFONE LTD·Filed 1976·Granted Aug 8, 1978·2 cites·3 claims
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