Katsuki Manabe

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Roulette playing device
- Patent number 4,989,873
- Issue date Feb 5, 1991
- Sigma Enterprises, Incorporated
- Katsuki Manabe
- G07 - CHECKING-DEVICES
Information Patent Grant
Roulette playing device
- Patent number 4,906,005
- Issue date Mar 6, 1990
- Sigma Enterprises, Incorporated
- Katsuki Manabe
- G07 - CHECKING-DEVICES
Information Patent Grant
Roulette playing device
- Patent number 4,869,505
- Issue date Sep 26, 1989
- Sigma Enterprises, Incorporated
- Katsuki Manabe
- G07 - CHECKING-DEVICES
Information Patent Grant
Monitor game machine
- Patent number 4,478,407
- Issue date Oct 23, 1984
- Kabushiki Kaisha Sigma
- Katsuki Manabe
- G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS