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公开(公告)号：US2746548A
公开(公告)日：1956-05-22
申请号：US31999852
申请日：1952-11-12
Applicant: IBM
Inventor： PARIS ROBERT E , WIELAND JOHN A
IPC: A61K31/13
CPC classification number: B26D1/62 , Y10T83/166 , Y10T83/4728 , Y10T83/4731 , Y10T83/4746 , Y10T83/8765
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