Kiyoyuki Arai

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Tokyo, JA

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Patents Grantslast 30 patents

Information Patent Grant
Timer mechanism for use in a clock
- Patent number 4,070,822
- Issue date Jan 31, 1978
- Copal Company Limited
- Kiyoyuki Arai
- G04 - HOROLOGY
Information Patent Grant
Cartridge for audio-visual projectors
- Patent number 3,994,577
- Issue date Nov 30, 1976
- Copal Company Limited
- Kimitika Yamada
- B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information Patent Grant
Indicating device having a plurality of overturnable flaps
- Patent number 3,964,428
- Issue date Jun 22, 1976
- Copal Company Limited
- Kiyoyuki Arai
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS
Information Patent Grant
Memory mechanism
- Patent number 3,940,761
- Issue date Feb 24, 1976
- Copal Company Limited
- Kiyoyuki Arai
- G05 - CONTROLLING REGULATING