Inventor · disambiguated record

Ralph L. Cerbone

Also filed as: CERBONE RALPH L

2 granted patents·15 citations·filing 1978–1980

57Inventor score

Technology areasH04M H04Q

Files withBELL TELEPHONE LABOR INC2

Top patents by PatentIndex Score

2 records

0160US4158112AHands-free answer arrangement on intercom for key telephone systemBELL TELEPHONE LABOR INC·Filed 1978·Granted Jun 12, 1979·11 cites·13 claims
0231US4283603AOn-hook/off-hook status check circuitBELL TELEPHONE LABOR INC·Filed 1980·Granted Aug 11, 1981·4 cites·7 claims

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