Hoisting apparatus for elevator platforms,申请号US19480031316-传众专利搜索

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发明名称	Hoisting apparatus for elevator platforms
摘要
申请公布号	US2500539(A)	申请公布日期	1950.03.14
申请号	US19480031316	申请日期	1948.06.05
申请人	GRANATH JOHN O W	发明人	GRANATH JOHN O. W.
分类号	B66B9/187	主分类号	B66B9/187
代理机构		代理人
主权项
地址

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