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公开(公告)号：US1661719A
公开(公告)日：1928-03-06
申请号：US21262227
申请日：1927-08-13
Applicant: EDWARDS ROY M , POSCHEN JULIUS P
Inventor： EDWARDS ROY M , POSCHEN JULIUS P
IPC: E05F15/16
CPC classification number: E05F15/684 , E05Y2201/646 , E05Y2800/00 , E05Y2900/106 , Y10S16/31
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