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公开(公告)号：US3380490A
公开(公告)日：1968-04-30
申请号：US51999266
申请日：1966-01-11
Applicant: MINER IND INC
Inventor： ELLENBERG CARL H , ARNOLD WEINSTEIN , LITT DONALD D , JAROFF DAVID B
IPC: G07F11/00
CPC classification number: G07F11/00
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