Yoshitusgu Morikawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rubber-made covering member for push button switches
- Patent number 4,390,765
- Issue date Jun 28, 1983
- Shin-Etsu Polymer Co., Ltd.
- Ryoichi Sado
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Keyboard switch covering pads
- Patent number 4,289,940
- Issue date Sep 15, 1981
- Shin-Etsu Polymer Company, Ltd.
- Ryoichi Sado
- H01 - BASIC ELECTRIC ELEMENTS