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Yasushi Yonemura
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Tokyo, JP
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last 30 patents
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Patent Grant
Method and instrument for measuring inside diameter of conduit
Patent number
6,895,681
Issue date
May 24, 2005
Tokyo Gas Co., Ltd.
Yasushi Yonemura
B08 - CLEANING
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last 30 patents
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Patent Application
Method and instrument for measuring inside diameter of conduit
Publication number
20040111910
Publication date
Jun 17, 2004
Yasushi Yonemura
B08 - CLEANING