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公开(公告)号：US1293705A
公开(公告)日：1919-02-11
申请号：US23407418
申请日：1918-05-13
Applicant: CEDERBORG CONRAD E
Inventor： CEDERBORG CONRAD E
CPC classification number: E05D15/0634 , E05Y2201/64 , Y10T16/3834
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