Assignee
WATANABE KENKYUSHO
10 granted patents·71 citations·filing 1975–1979
Top patents by PatentIndex Score
10 records- 0186US4123065APhonograph for use with record cartridgesWATANABE KENKYUSHO·Filed 1977·Granted Oct 31, 1978·23 cites·6 claims
- 0274US4150831AToy record playerWATANABE KENKYUSHO·Filed 1977·Granted Apr 24, 1979·16 cites·7 claims
- 0352US4004815AMiniature toy sound-reproducing deviceWATANABE KENKYUSHO·Filed 1975·Granted Jan 25, 1977·7 cites·8 claims
- 0449US4027887AToy phonograph with automatic pickup arm return meansWATANABE KENKYUSHO·Filed 1976·Granted Jun 7, 1977·6 cites·7 claims
- 0546US4150832AMechanism for causing returning movement of tone arm of toy phonographWATANABE KENKYUSHO·Filed 1977·Granted Apr 24, 1979·5 cites·3 claims
- 0643US4286789ASimplified record playerWATANABE KENKYUSHO·Filed 1979·Granted Sep 1, 1981·4 cites·7 claims
- 0742US4107489ASwitch mechanism for simple phonographWATANABE KENKYUSHO·Filed 1976·Granted Aug 15, 1978·4 cites·5 claims
- 0840US4157832ASimplified structure of toy phonographWATANABE KENKYUSHO·Filed 1977·Granted Jun 12, 1979·3 cites·6 claims
- 0935US3992016ASimplified phonographWATANABE KENKYUSHO·Filed 1975·Granted Nov 16, 1976·2 cites·5 claims
- 1032US4061343AVibration transmission mechanism for a phonographWATANABE KENKYUSHO·Filed 1976·Granted Dec 6, 1977·1 cites·4 claims
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