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公开(公告)号：US3378431A
公开(公告)日：1968-04-16
申请号：US62463567
申请日：1967-03-20
Applicant: PFAUDLER PERMUTIT INC
Inventor： SMITH JR CARLYLE F , CRANDALL WILLIAM B
IPC: C03C3/06
CPC classification number: C03C3/06 , C03C2201/26 , C03C2203/10
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