Tsunehiko Nagasawa

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method of recording and reproducing visual information in audio rec...
- Patent number 4,519,008
- Issue date May 21, 1985
- Toshiba-EMI Limited
- Tsutomu Takenouchi
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS