Safety grip for ladders,申请号US19320647044-传众专利搜索

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发明名称	Safety grip for ladders
摘要
申请公布号	US1927469(A)	申请公布日期	1933.09.19
申请号	US19320647044	申请日期	1932.12.13
申请人	PLUMPTON EARL F	发明人	PLUMPTON EARL F.
分类号	A47L3/04;E06C7/18	主分类号	A47L3/04
代理机构		代理人
主权项
地址

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