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发明名称
RAIL STEP JOINT
摘要
申请公布号
CA374411(A)
申请公布日期
1938.06.14
申请号
CAD374411
申请日期
申请人
THE RAIL JOINT COMPANY OF CANADA
发明人
CLARKSON A. DISBROW
分类号
主分类号
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代理人
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