Ryuji Shutoku

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Power supply control device in fire alarm system
- Patent number 5,151,683
- Issue date Sep 29, 1992
- Nohmi Bosai Co., Ltd.
- Kaoru Takahashi
- G08 - SIGNALLING
Information Patent Grant
Line interruption supervisory device for a fire alarm system
- Patent number 5,086,293
- Issue date Feb 4, 1992
- Nohmi Bosai Kabushiki Kaisha
- Kaoru Takahashi
- G08 - SIGNALLING
Information Patent Grant
Fire alarm system
- Patent number 5,083,107
- Issue date Jan 21, 1992
- Nohmi Bosai Kabushiki Kaisha
- Kaoru Takahashi
- G08 - SIGNALLING
Information Patent Grant
Fire alarm system
- Patent number 4,996,518
- Issue date Feb 26, 1991
- Nohmi Bosai Co., Ltd.
- Kaoru Takahashi
- G08 - SIGNALLING