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公开(公告)号：US2785444A
公开(公告)日：1957-03-19
申请号：US30548652
申请日：1952-08-20
Applicant: BENDER LLOYD F
Inventor： BENDER LLOYD F
IPC: E06B3/50
CPC classification number: E06B3/5063 , E06B3/50 , Y10T16/547
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