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公开(公告)号：US2023909A
公开(公告)日：1935-12-10
申请号：US59155932
申请日：1932-02-08
Applicant: SPENCER F WREAD
Inventor： WREAD WILLIAM E
IPC: E05D15/24
CPC classification number: E05D15/24 , E05D13/1215 , E05D13/1261 , E05Y2201/67 , E05Y2900/106
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