Isao Ohwaki

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Recording system for a multichannel record disc
- Patent number 4,045,621
- Issue date Aug 30, 1977
- Victor Company of Japan, Ltd.
- Isao Ohwaki
- G11 - INFORMATION STORAGE
Information Patent Grant
Record disc cutting stylus
- Patent number 4,033,592
- Issue date Jul 5, 1977
- Victor Company of Japan, Limited
- Kaoru Totuka
- G11 - INFORMATION STORAGE
Information Patent Grant
Multichannel record disc recording system
- Patent number 4,016,373
- Issue date Apr 5, 1977
- Victor Company of Japan, Limited
- Yukinobu Ishigaki
- G11 - INFORMATION STORAGE