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公开(公告)号：US2635617A
公开(公告)日：1953-04-21
申请号：US5599848
申请日：1948-10-22
Applicant: SHARPLES CORP
Inventor： CONDELL RAYMOND H
IPC: F16K15/14
CPC classification number: F16K15/142 , Y10T137/1135
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