Takao Nagashima

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Key switch device
- Patent number 4,851,626
- Issue date Jul 25, 1989
- Topre Corporation
- Takao Nagashima
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Keyboard switch
- Patent number 4,584,444
- Issue date Apr 22, 1986
- Topre Corporation
- Takao Nagashima
- H03 - BASIC ELECTRONIC CIRCUITRY