Jyoji Tsutsumi

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Iwaki, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pushbutton switch with wear preventing groove
- Patent number 5,113,047
- Issue date May 12, 1992
- Alps Electric Co., Ltd.
- Jyoji Tsutsumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Push-button switch
- Patent number 4,987,278
- Issue date Jan 22, 1991
- Alps Electric Co., Ltd.
- Jyoji Tsutsumi
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Water-and-dust-proof push-button switch housing dummy terminal for...
- Patent number 4,913,285
- Issue date Apr 3, 1990
- Alps Electronic Co., Ltd.
- Jyoji Tsutsumi
- H01 - BASIC ELECTRIC ELEMENTS