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经营范围
发明名称
Railway draft rigging
摘要
申请公布号
US1871385(A)
申请公布日期
1932.08.09
申请号
US19270239861
申请日期
1927.12.14
申请人
W. H. MINER, INC.
发明人
O'CONNOR JOHN F.
分类号
B61G9/10
主分类号
B61G9/10
代理机构
代理人
主权项
地址
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