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公开(公告)号：US3253612A
公开(公告)日：1966-05-31
申请号：US29877463
申请日：1963-07-30
Applicant: SARCO COMPANY INC
Inventor： CURATOLA PAUL C , RITTER JOHN W , STEVENS TIBOR R
IPC: F16K1/52
CPC classification number: F16K1/523 , Y10T137/8225 , Y10T137/86984
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