Hiroaki Ookubo

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Patents Grantslast 30 patents

Information Patent Grant
Platen clutch mechanism
- Patent number 4,710,046
- Issue date Dec 1, 1987
- Matsushita Electric Industrial Co. Ltd.
- Hiroaki Ookubo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS
Information Patent Grant
Electric platen driving device with manual override
- Patent number 4,697,943
- Issue date Oct 6, 1987
- Matsushita Electric Industrial Co., Ltd.
- Hiroaki Ookubo
- B41 - PRINTING LINING MACHINES TYPEWRITERS STAMPS