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发明名称
METHOD AND APPARATUS FOR PRECONSTRUCTING RAILROAD TRACK SECTIONS
摘要
申请公布号
CA854984(A)
申请公布日期
1970.11.03
申请号
CAD854984
申请日期
申请人
THE NEW YORK CENTRAL RAILROAD COMPANY
发明人
MAX E. KERNS
分类号
主分类号
代理机构
代理人
主权项
地址
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