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发明名称
Verfahren zur Nitrierung von Wolfram
摘要
申请公布号
DE589906(C)
申请公布日期
1933.12.18
申请号
DE1929W084097D
申请日期
1929.11.01
申请人
RICHARD WALTER
发明人
分类号
C23C8/30
主分类号
C23C8/30
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代理人
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