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公开(公告)号：US2227258A
公开(公告)日：1940-12-31
申请号：US25779639
申请日：1939-02-23
Applicant: SARCO COMPANY INC
Inventor： MILTON HILMER , GEORGE SIGNAROVITZ
IPC: F16K31/00
CPC classification number: F16K31/00 , Y10T137/1963 , Y10T137/7368 , Y10T137/7371 , Y10T137/7762 , Y10T137/7805
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