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发明名称
RAIL JOINT
摘要
申请公布号
CA306645(A)
申请公布日期
1930.12.16
申请号
CAD306645
申请日期
申请人
JOHN W. BREWER
发明人
JOHN W. BREWER
分类号
主分类号
代理机构
代理人
主权项
地址
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