Naoto Ohtsuki

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Katakura-machi, Hachiohji, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Typewriter for braille symbols and printed characters
- Patent number 4,488,828
- Issue date Dec 18, 1984
- Naoto Ohtsuki
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS