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公开(公告)号：US3015426A
公开(公告)日：1962-01-02
申请号：US74876058
申请日：1958-07-15
Applicant: DIETZ MAX M , O'CONNELL PAUL R
Inventor： DIETZ MAX M , O'CONNELL PAUL R
CPC classification number: G07B3/02 , B65C11/00 , Y10T225/206
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