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发明名称
Railroad truck centering device
摘要
申请公布号
US1920348(A)
申请公布日期
1933.08.01
申请号
US19300498285
申请日期
1930.11.04
申请人
BLUNT JAMES G
发明人
BLUNT JAMES G.
分类号
B61F5/48
主分类号
B61F5/48
代理机构
代理人
主权项
地址
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