Hoisting attachment for a ladder,申请号US19640368639-传众专利搜索

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发明名称	Hoisting attachment for a ladder
摘要
申请公布号	US3208555(A)	申请公布日期	1965.09.28
申请号	US19640368639	申请日期	1964.05.19
申请人	FRY FRED C	发明人	FRY FRED C.
分类号	E04F21/18	主分类号	E04F21/18
代理机构		代理人
主权项
地址

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