SAFETY SHORING DEVICE FOR EXCAVATIONS,申请号CAD581871-传众专利搜索

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发明名称	SAFETY SHORING DEVICE FOR EXCAVATIONS
摘要
申请公布号	CA581871(A)	申请公布日期	1959.08.25
申请号	CAD581871	申请日期
申请人	FRED S. PORTER	发明人	FRED S. PORTER
分类号		主分类号
代理机构		代理人
主权项
地址

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