Hideo Oka

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Yokohama-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
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- Patent number 6,804,889
- Issue date Oct 19, 2004
- Beldex Corporation
- Hirokazu Ishikawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES

Patents Applicationslast 30 patents

Information Patent Application
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- Publication number 20030177650
- Publication date Sep 25, 2003
- BELDEX CORPORATION
- Hirokazu Ishikawa
- B43 - WRITING OR DRAWING IMPLEMENTS BUREAU ACCESSORIES