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发明名称
Method of increasing the hardness of fabricated ductile metals of the chromium group
摘要
申请公布号
US2242254(A)
申请公布日期
1941.05.20
申请号
US19380247218
申请日期
1938.12.22
申请人
CLEVELAND TUNGSTEN, INC.
发明人
MANSFIELD WILLIAM E.
分类号
C23C12/02
主分类号
C23C12/02
代理机构
代理人
主权项
地址
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