Yutaka Atsumi

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Hamakita, JP

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Patents Grantslast 30 patents

Information Patent Grant
Air filter
- Patent number 6,336,947
- Issue date Jan 8, 2002
- Toyo Roki Seizo Kabushiki Kaisha
- Yutaka Atsumi
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL