Fumio Kobayashi

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Electric control system for magnetic sheet recording and reproducin...
- Patent number 4,091,427
- Issue date May 23, 1978
- Gakken Co., Ltd.
- Masao Iwaoka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Magnetic sheet player with an adjustable inclined magnetic head
- Patent number 4,020,505
- Issue date Apr 26, 1977
- Gakken Co. Ltd.
- Masao Iwaoka
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS