Tadashi Iwasawa

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Himonyo, Meguro-ku, Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Pickup device
- Patent number 4,344,167
- Issue date Aug 10, 1982
- Tadashi Iwasawa
- G11 - INFORMATION STORAGE
Information Patent Grant
Phonograph cartridge with very hard metal ceramic frame
- Patent number 4,218,591
- Issue date Aug 19, 1980
- Tadashi Iwasawa
- H04 - ELECTRIC COMMUNICATION TECHNIQUE