Sohya Takahashi

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Broadband electromagnetic sound source with differently tuned diaph...
- Patent number 4,147,899
- Issue date Apr 3, 1979
- Kabushiki Kaisha Daini Seikosha
- Shigeo Mori
- H04 - ELECTRIC COMMUNICATION TECHNIQUE