Nichigi Engineering Co., Ltd.

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Patents Grantslast 30 patents

Information Patent Grant
Seismic detecting shut-down valve device
- Patent number 6,311,714
- Issue date Nov 6, 2001
- Nichigi Engineering Co., Ltd.
- Susumu Watanabe
- G05 - CONTROLLING REGULATING
Information Patent Grant
Safety system at a discharge port in a pool
- Patent number 6,253,391
- Issue date Jul 3, 2001
- Nichigi Engineering Co., Ltd.
- Susumu Watanabe
- E04 - BUILDING

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