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公开(公告)号：US2417494A
公开(公告)日：1947-03-18
申请号：US45593942
申请日：1942-08-24
Applicant: HOOF PRODUCTS COMPANY
Inventor： HOOF FRANCES A , KEPNER HUGH C , WALTER ECKERT
CPC classification number: F16K1/46 , F16K1/34 , Y10S251/90 , Y10S277/91 , Y10S285/906 , Y10S285/918
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