Safety mechanism or control for elevators,申请号US19490073075-传众专利搜索

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发明名称	Safety mechanism or control for elevators
摘要
申请公布号	US2644546(A)	申请公布日期	1953.07.07
申请号	US19490073075	申请日期	1949.01.27
申请人	WILLIAM DOOLAN	发明人	DOOLAN WILLIAM
分类号	B66B5/14	主分类号	B66B5/14
代理机构		代理人
主权项
地址

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