Inventor · disambiguated record

D. Joseph Denen

Also filed as: DENEN D JOSEPH

2 granted patents·24 citations·filing 1977–1978

60Inventor score

Technology areasH04M

Files withFLOYD BELL ASSOC INC2

Top patents by PatentIndex Score

2 records

0164US4214131AElectronic audio signalling device for telephonesFLOYD BELL ASSOC INC·Filed 1978·Granted Jul 22, 1980·13 cites·9 claims
0260US4157459AElectronic audio signalling device for telephonesFLOYD BELL ASSOC INC·Filed 1977·Granted Jun 5, 1979·11 cites·7 claims

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