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发明名称
Verfahren zur Erhöhung der Verschleissfestigkeit von Schienen.
摘要
申请公布号
CH220546(A)
申请公布日期
1942.04.15
申请号
CHD220546
申请日期
1940.08.03
申请人
WITKOWITZER BERGBAU- UND EISENHUETTEN-GEWERKSCHAFT;HOFMANN,FRITZ,DIPL. ING.
发明人
EISENHUETTEN-GEWERKSCHAFT WITKOWITZER BERGBAU- UND;ING. HOFMANN,FRITZ,DIPL.
分类号
C21D9/04
主分类号
C21D9/04
代理机构
代理人
主权项
地址
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