Automatic door operator,申请号US19460683962-传众专利搜索

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发明名称	Automatic door operator
摘要
申请公布号	US2543789(A)	申请公布日期	1951.03.06
申请号	US19460683962	申请日期	1946.07.16
申请人	MACMILLAN DUNCAN C	发明人	MACMILLAN DUNCAN C.
分类号	E05F15/20	主分类号	E05F15/20
代理机构		代理人
主权项
地址

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