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发明名称
Insulated rail joints
摘要
申请公布号
US3416728(A)
申请公布日期
1968.12.17
申请号
US19650464631
申请日期
1965.06.17
申请人
PORTEC, INC.
发明人
JR. WILLIAM R. HAMILTON,
分类号
E01B11/54
主分类号
E01B11/54
代理机构
代理人
主权项
地址
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