Naohisa SHIRAFUJI

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Yokohama-shi, Kanagawa, JP

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Patents Grantslast 30 patents

Information Patent Grant
Optical fiber cutter
- Patent number 10,520,675
- Issue date Dec 31, 2019
- Sei Optifrontier Co., Ltd.
- Hiroshi Nakamura
- B26 - HAND CUTTING TOOLS CUTTING SEVERING

Patents Applicationslast 30 patents

Information Patent Application
OPTICAL FIBER CUTTER
- Publication number 20190049667
- Publication date Feb 14, 2019
- SEI Optifrontier Co., Ltd.
- Hiroshi NAKAMURA
- G02 - OPTICS