Sanwa Diamond Industrial Co., Ltd.

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Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
5067969 Cutter and manufacturing method thereforExpiredMar 09, 90Nov 26, 91[B24D]
5016498 Method and apparatus for manufacturing super abrasive cutting sawExpiredAug 28, 87May 21, 91[B29C, B23D]
5014678 CutterExpiredMar 09, 90May 14, 91[B28D, B24D]
4982720 Cutting saw bladeExpiredApr 13, 89Jan 08, 91[B28D]
4909234 CutterExpiredJun 05, 89Mar 20, 90[B28D, B24D]
4860721 Super abrasive cutting sawExpiredAug 27, 87Aug 29, 89[B28D]

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