Assignee
NISHI DENKO KK
JP·3 granted patents·97 citations·filing 1987–1990
Top patents by PatentIndex Score
3 records- 0182US5140301AGuidance method and apparatus in case of emergency evacuationNISHI DENKO KK·Filed 1989·Granted Aug 18, 1992·62 cites·11 claims
- 0256US4860369AFlat speaker unitNISHI DENKO KK·Filed 1987·Granted Aug 22, 1989·33 cites·8 claims
- 0321US5153914ASound equipment systemNISHI DENKO KK·Filed 1990·Granted Oct 6, 1992·2 cites·1 claims
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