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公开(公告)号：US2403689A
公开(公告)日：1946-07-09
申请号：US45656342
申请日：1942-08-28
Applicant: HOOF PRODUCTS COMPANY
Inventor： SPRAGUE ROBERT B
IPC: F16K17/30
CPC classification number: F16K17/30 , Y10T137/7785 , Y10T137/7791 , Y10T137/7792 , Y10T137/7834
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