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发明名称
Etching process
摘要
申请公布号
US2521648(A)
申请公布日期
1950.09.05
申请号
US19450575161
申请日期
1945.01.29
申请人
CRONAME, INCORPORATED
发明人
OTT ERNEST B.
分类号
B44C1/22;C23F1/02
主分类号
B44C1/22
代理机构
代理人
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地址
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