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公开(公告)号：US1816024A
公开(公告)日：1931-07-28
申请号：US42935630
申请日：1930-02-18
Applicant: VICTOR PETERSEN
Inventor： VICTOR PETERSEN
CPC classification number: E05F5/02 , E05F5/08 , E05Y2201/212 , E05Y2201/264 , E05Y2201/474 , Y10T16/625
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