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公开(公告)号：US2385352A
公开(公告)日：1945-09-25
申请号：US44681742
申请日：1942-06-12
Applicant: MENGEL COMPANY
Inventor： CLARENCE DAVIS OLIVER
IPC: E06B3/70
CPC classification number: E06B3/7017 , Y10S220/09 , Y10T29/49805 , Y10T156/1003
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