Masahiro Ohtsu

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Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Volume control for sound reproducing apparatus
- Patent number 4,964,108
- Issue date Oct 16, 1990
- Sony Corporation
- Masahiro Ohtsu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Graphic balancer
- Patent number 4,736,426
- Issue date Apr 5, 1988
- Sony Corporation
- Tsutomu Kinoshita
- H04 - ELECTRIC COMMUNICATION TECHNIQUE