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公开(公告)号：US2234153A
公开(公告)日：1941-03-04
申请号：US25671139
申请日：1939-02-16
Applicant: UNITED ENG FOUNDRY CO
Inventor： GEORGE HERBERT CLARENCE
CPC classification number: B21B28/04 , B21B45/0284 , B21B45/0287 , Y10S29/061 , Y10S29/07 , Y10S29/081 , Y10S29/09 , Y10S29/093 , Y10T29/455
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