Draft rigging,申请号US19280325491-传众专利搜索

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发明名称	Draft rigging
摘要
申请公布号	US1930529(A)	申请公布日期	1933.10.17
申请号	US19280325491	申请日期	1928.12.12
申请人	BIRDSBORO STEEL FOUNDRY & MACHINE COMPANY	发明人	MARTIN MARK H.
分类号	B61G9/24	主分类号	B61G9/24
代理机构		代理人
主权项
地址

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