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发明名称
Improvements in or relating to the proofing of iron and steel against rust
摘要
申请公布号
GB350420(A)
申请公布日期
1931.06.10
申请号
GB19290037882
申请日期
1929.12.10
申请人
WILLIAM HOWARD COLE
发明人
分类号
C23C22/33
主分类号
C23C22/33
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代理人
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