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发明名称
Process for electrochemically producing stable images and characters
摘要
申请公布号
US1970539(A)
申请公布日期
1934.08.21
申请号
US19320593428
申请日期
1932.02.16
申请人
BAUSCH JR VIKTOR
发明人
JR. VIKTOR BAUSCH,
分类号
B41M5/20
主分类号
B41M5/20
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代理人
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