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发明名称
RAIL JOINT BAR
摘要
申请公布号
CA308899(A)
申请公布日期
1931.02.24
申请号
CAD308899
申请日期
申请人
THE RAIL JOINT COMPANY OF CANADA
发明人
DANIEL L. BRAIN
分类号
主分类号
代理机构
代理人
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地址
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