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公开(公告)号：US3231401A
公开(公告)日：1966-01-25
申请号：US38097364
申请日：1964-06-22
Applicant: CARBORUNDUM CO
Inventor： PRICE CLAIR E , WALWORTH CLAIRE B
CPC classification number: C04B28/24 , C04B20/0064 , C04B28/00 , C04B2111/00482 , C04B2111/28 , Y10S264/19 , C04B14/46 , C04B14/104
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