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发明名称
Ballast removing apparatus
摘要
申请公布号
US2463499(A)
申请公布日期
1949.03.01
申请号
US19440533806
申请日期
1944.05.02
申请人
THORNLEY EDWIN M
发明人
THORNLEY EDWIN M.
分类号
E01B27/04
主分类号
E01B27/04
代理机构
代理人
主权项
地址
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