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发明名称
Cover attachment for telephone hand sets
摘要
申请公布号
US2554081(A)
申请公布日期
1951.05.22
申请号
US19480053116
申请日期
1948.10.06
申请人
ALLEN CALVIN H;ALLEN MARY E
发明人
ALLEN CALVIN H.;ALLEN MARY E.
分类号
H04M1/03
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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