Takeshi Kawamura

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Osaka, JP

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Patents Grantslast 30 patents

Information Patent Grant
Lightning surge protector
- Patent number 5,191,503
- Issue date Mar 2, 1993
- Sumitomo Electric Industries, Ltd.
- Takeshi Kawamura
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Apparatus for and method of detecting an abnormality in a signal
- Patent number 5,150,111
- Issue date Sep 22, 1992
- Sumitomo Electric Industries, Ltd.
- Keishi Fujieda
- H04 - ELECTRIC COMMUNICATION TECHNIQUE