Tohru Sampei

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Toyokawa, JA

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Patents Grantslast 30 patents

Information Patent Grant
Audio-frequency power amplifiers
- Patent number 4,068,187
- Issue date Jan 10, 1978
- Hitachi, Ltd.
- Nobutaka Amada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Low-frequency power amplifier
- Patent number 4,045,744
- Issue date Aug 30, 1977
- Hitachi, Ltd.
- Tohru Sampei
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Amplifier circuit having power supply voltage responsive to amplitu...
- Patent number 3,961,280
- Issue date Jun 1, 1976
- Hitachi, Ltd.
- Tohru Sampei
- H03 - BASIC ELECTRONIC CIRCUITRY