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公开(公告)号：US2855567A
公开(公告)日：1958-10-07
申请号：US42362754
申请日：1954-04-16
Applicant: DAYSTROM INC
Inventor： LAMB ANTHONY H , CLARK ARTHUR D
IPC: G01R11/02
CPC classification number: G01R11/02
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