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公开(公告)号：US1890767A
公开(公告)日：1932-12-13
申请号：US37694229
申请日：1929-07-09
Applicant: ADAMS MAC B
Inventor： ADAMS MAC B
IPC: E05F11/34
CPC classification number: E05F11/34 , E05Y2900/154 , Y10T74/18752
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