Closure operating mechanism,申请号US19300433271-传众专利搜索

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发明名称	Closure operating mechanism
摘要
申请公布号	US1970286(A)	申请公布日期	1934.08.14
申请号	US19300433271	申请日期	1930.03.05
申请人	OTIS ELEVATOR COMPANY	发明人	DUNN EDWARD LEE
分类号	B66B13/08	主分类号	B66B13/08
代理机构		代理人
主权项
地址

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