Shoichi Watanabe

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Ribbon protector including electro-conductive elements and platen g...
- Patent number 4,929,102
- Issue date May 29, 1990
- Oki Electric Co., Ltd.
- Minoru Mizutani
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS