Door-control apparatus,申请号US19280303299-传众专利搜索

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发明名称	Door-control apparatus
摘要
申请公布号	US1782040(A)	申请公布日期	1930.11.18
申请号	US19280303299	申请日期	1928.08.31
申请人	SARGENT & GREENLEAF, INC.	发明人	HILL REUBEN
分类号	E05F3/02	主分类号	E05F3/02
代理机构		代理人
主权项
地址

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