Tsutomu Masumoto

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Tokaimura, JP

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Patents Grantslast 30 patents

Information Patent Grant
Rotary head cylinder for video tape recorder
- Patent number 5,047,882
- Issue date Sep 10, 1991
- Hitachi, Ltd.
- Hiroyoshi Kawai
- G11 - INFORMATION STORAGE
Information Patent Grant
Method for determining shape of crack
- Patent number 4,353,255
- Issue date Oct 12, 1982
- Hitachi, Ltd.
- Yoshio Fukuda
- G01 - MEASURING TESTING