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经营范围
发明名称
Rail joining and separating device
摘要
申请公布号
US2398116(A)
申请公布日期
1946.04.09
申请号
US19440568277
申请日期
1944.12.15
申请人
THOMAS ROY
发明人
ROY THOMAS
分类号
E01B29/20
主分类号
E01B29/20
代理机构
代理人
主权项
地址
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