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Amphur Muang, TH
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Patents Grants
last 30 patents
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Patent Grant
Method of manufacturing glass substrate for magnetic disk and syste...
Patent number
8,640,497
Issue date
Feb 4, 2014
Hoya Corporation
Ryuuichi Kashima
B24 - GRINDING POLISHING
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last 30 patents
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Patent Application
METHOD OF MANUFACTURING GLASS SUBSTRATE FOR MAGNETIC DISK AND SYSTE...
Publication number
20100024484
Publication date
Feb 4, 2010
HOYA CORPORATION
Ryuuichi Kashima
B24 - GRINDING POLISHING