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公开(公告)号：US2528904A
公开(公告)日：1950-11-07
申请号：US67178546
申请日：1946-05-23
Applicant: GUNGE NORBALLE SVEND
Inventor： GUNGE NORBALLE SVEND
IPC: E05F3/10
CPC classification number: E05F3/106 , E05Y2201/656 , E05Y2900/132 , Y10T16/2774 , Y10T16/287
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