Masataka HAYASHI

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Chiba-shi, JP

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Patents Grantslast 30 patents

Information Patent Grant
Waterproof device and portable timepiece
- Patent number 8,920,022
- Issue date Dec 30, 2014
- Seiko Instruments Inc.
- Masahiro Ishida
- G04 - HOROLOGY

Patents Applicationslast 30 patents

Information Patent Application
WATERPROOF DEVICE AND PORTABLE TIMEPIECE
- Publication number 20140233359
- Publication date Aug 21, 2014
- SEIKO INSTRUMENTS INC.
- Masahiro ISHIDA
- H01 - BASIC ELECTRIC ELEMENTS