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公开(公告)号:US2773925A
公开(公告)日:1956-12-11
申请号:US21496951
申请日:1951-03-10
发明人: ROTHLEIN BERNARD J , STAHL FRIEDA A
IPC分类号: B21J7/16 , H01L21/00 , H01L21/322 , H01L27/146 , H01L29/00 , H01L31/00 , H01L31/0236
CPC分类号: H01L29/00 , B21J7/16 , H01L21/00 , H01L21/322 , H01L27/14643 , H01L31/00 , H01L31/02363 , Y02E10/50 , Y10S420/903
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公开(公告)号:US2762957A
公开(公告)日:1956-09-11
申请号:US17406950
申请日:1950-07-15
发明人: ROTHLEIN BERNARD J
IPC分类号: H01L21/00 , H01L29/00 , H01L29/417
CPC分类号: H01L29/00 , H01L21/00 , H01L29/417
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