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发明名称
Loudspeaking telephones
摘要
申请公布号
US3102169(A)
申请公布日期
1963.08.27
申请号
US19590859405
申请日期
1959.12.14
申请人
MODERN TELEPHONES (GREAT BRITAIN) LIMITED
发明人
IVENS EDGAR;SIMPSON ARTHUR IAN FORBES
分类号
H04M1/62
主分类号
H04M1/62
代理机构
代理人
主权项
地址
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