ANTI-SLIPPING DEVICE FOR LADDERS,申请号CAD316220-传众专利搜索

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发明名称	ANTI-SLIPPING DEVICE FOR LADDERS
摘要
申请公布号	CA316220(A)	申请公布日期	1931.10.20
申请号	CAD316220	申请日期
申请人	WILLIAM GEORGE BEATTY	发明人	WILLIAM GEORGE BEATTY
分类号		主分类号
代理机构		代理人
主权项
地址

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