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经营范围
发明名称
METHOD OF HEAT TREATING RAIL
摘要
申请公布号
KR940008929(B1)
申请公布日期
1994.09.28
申请号
KR19870009469
申请日期
1987.08.28
申请人
PERMA-TRACKS SYSTEMS INC.
发明人
SOMMER, RICHARD A.;FABER, MICHAEL R.;JENNINGS, REUEL E.
分类号
C21D1/18;C21D9/04;(IPC1-7):C21D1/18
主分类号
C21D1/18
代理机构
代理人
主权项
地址
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