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公开(公告)号：US1815193A
公开(公告)日：1931-07-21
申请号：US40684629
申请日：1929-11-13
Applicant: CHARLES DE LE FOND
Inventor： HENRY DOESKEN
IPC: E05F15/12
CPC classification number: E05F15/614 , E05Y2201/21 , E05Y2201/246 , E05Y2201/26 , E05Y2201/266 , E05Y2201/462 , E05Y2900/40
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