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公开(公告)号:US2065325A
公开(公告)日:1936-12-22
申请号:US65778733
申请日:1933-02-21
发明人: CALHOUN JOHN C
CPC分类号: A43B21/47 , A43B21/42 , Y10T24/45581 , Y10T24/45942 , Y10T24/45953 , Y10T403/60
公开(公告)号:US2065325A
公开(公告)日:1936-12-22
申请号:US65778733
申请日:1933-02-21
发明人: CALHOUN JOHN C
CPC分类号: A43B21/47 , A43B21/42 , Y10T24/45581 , Y10T24/45942 , Y10T24/45953 , Y10T403/60