Kouhei Kawanobe

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Kawagoe, JP

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Patents Grantslast 30 patents

Information Patent Grant
Electronic calculator watch
- Patent number 4,268,913
- Issue date May 19, 1981
- Citizen Watch Co., Ltd.
- Tadahiko Nakagiri
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Switch structure for electronic timepiece
- Patent number 4,257,115
- Issue date Mar 17, 1981
- Citizen Watch Co., Ltd.
- Toshikazu Hatuse
- G04 - HOROLOGY
Information Patent Grant
Driver circuit for electrochromic display device
- Patent number 4,150,365
- Issue date Apr 17, 1979
- Citizen Watch Co., Ltd.
- Minoru Natori
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS