Akihiro Sugawara

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Fukushima, JP

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Patents Grantslast 30 patents

Information Patent Grant
Gasket, method of molding same, and cylindrical alkaline-manganese...
- Patent number 6,634,649
- Issue date Oct 21, 2003
- Sony Corporation
- Norishige Yamaguchi
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL