Keiki Ariga

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Yokohama, JP

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Patents Grantslast 30 patents

Information Patent Grant
Method and apparatus for determinating a vacuum degree within a fle...
- Patent number 4,709,578
- Issue date Dec 1, 1987
- Nippon Sanso Kabushiki Kaisha
- Tadayoshi Iwasaki
- G01 - MEASURING TESTING