Takao Sumi

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Undesired signal canceller
- Patent number 4,081,837
- Issue date Mar 28, 1978
- Sony Corporation
- Masahiro Tada
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Gain control circuit
- Patent number 3,940,708
- Issue date Feb 24, 1976
- Sony Corporation
- Takao Sumi
- H03 - BASIC ELECTRONIC CIRCUITRY