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发明名称
BALLAST HANDLING SLED AND PLOW FOR RAILROAD TRACKS
摘要
申请公布号
CA641170(A)
申请公布日期
1962.05.15
申请号
CAD641170
申请日期
申请人
MANNIX CO. LTD.
发明人
JAMES W. CHRISTOFF
分类号
主分类号
代理机构
代理人
主权项
地址
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