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公开(公告)号：US3109839A
公开(公告)日：1963-11-05
申请号：US17572462
申请日：1962-02-26
Applicant: SHARPLES CORP
Inventor： KEITH JR FREDERICK W
CPC classification number: B04B1/08 , B04B5/10 , C11B13/005 , Y02W30/74 , Y10S494/901
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公开(公告)号：US2594445A
公开(公告)日：1952-04-29
申请号：US70512146
申请日：1946-10-23
Applicant: SHARPLES CORP
Inventor： KEITH JR FREDERICK W
IPC: B04B1/00
CPC classification number: B04B1/00 , B04B7/16 , Y10S494/901
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