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发明名称
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摘要
申请公布号
US2175276(A)
申请公布日期
1939.10.10
申请号
US19390267794
申请日期
1939.04.14
申请人
MUTTI OSCAR E
发明人
MUTTI OSCAR E.
分类号
G09F13/26
主分类号
G09F13/26
代理机构
代理人
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