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公开(公告)号：US2199054A
公开(公告)日：1940-04-30
申请号：US25532139
申请日：1939-02-08
Applicant: JENKINS BROS
Inventor： SOROKIN MICHAEL A
IPC: F16K15/20
CPC classification number: F16K15/20 , Y10S152/07 , Y10T137/3584
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