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发明名称
METHOD OF BUILDING A RAILROAD SLIP OR PART OF CROSSING AND RAILROAD SLIP POINT OR PART OF CROSSING
摘要
申请公布号
PL122894(B1)
申请公布日期
1982.08.31
申请号
PL19770198197
申请日期
1977.05.18
申请人
发明人
分类号
C21D9/04;B23K9/00;B23K9/038;B23K28/00;B23K35/00;E01B7/00;E01B7/02;E01B7/12;E01B11/00;(IPC1-7):E01B7/12
主分类号
C21D9/04
代理机构
代理人
主权项
地址
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