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公开(公告)号:US1918600A
公开(公告)日:1933-07-18
申请号:US35346129
申请日:1929-04-08
Applicant: WILLIAMS WHITE & CO
Inventor: HINTZ HENRY E , KLINE GEORGE P
IPC: B21D28/26
CPC classification number: B21D28/265 , Y10T83/637 , Y10T83/6566
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公开(公告)号:US1816117A
公开(公告)日:1931-07-28
申请号:US34780029
申请日:1929-03-18
Applicant: WILLIAMS WHITE & CO
Inventor: KLINE GEORGE P
IPC: B21D17/04
CPC classification number: B21D17/04 , Y10T29/49531
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