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发明名称
RAILROAD JOURNAL BEARINGS
摘要
申请公布号
CA469277(A)
申请公布日期
1950.11.14
申请号
CAD469277
申请日期
申请人
JAMES J. LAUDIG
发明人
JAMES J. LAUDIG
分类号
主分类号
代理机构
代理人
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