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发明名称
RAIL JOINT REPAIRING METHOD
摘要
申请公布号
CA356591(A)
申请公布日期
1936.03.17
申请号
CAD356591
申请日期
申请人
THE DOMINION OXYGEN COMPANY
发明人
LEO C. RYAN
分类号
主分类号
代理机构
代理人
主权项
地址
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