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发明名称
RAIL POSITIONING SYSTEM
摘要
申请公布号
US3465687(A)
申请公布日期
1969.09.09
申请号
USD3465687
申请日期
1966.11.18
申请人
NEW YORK CENTRAL RAILROAD CO.:THE
发明人
MAX E. KERNS
分类号
E01B29/17;(IPC1-7):E01B29/16
主分类号
E01B29/17
代理机构
代理人
主权项
地址
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