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经营范围
发明名称
Cyanide salt bath
摘要
申请公布号
US2169008(A)
申请公布日期
1939.08.08
申请号
US19370159987
申请日期
1937.08.19
申请人
E. F. HOUGHTON & CO.
发明人
SARVIS LOUIS
分类号
C23C8/46
主分类号
C23C8/46
代理机构
代理人
主权项
地址
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