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发明名称
Private branch telephone exchange
摘要
申请公布号
US3185774(A)
申请公布日期
1965.05.25
申请号
US19610119515
申请日期
1961.06.26
申请人
OKI ELECTRIC INDUSTRY COMPANY, LIMITED
发明人
KAMOSHIDA MASATOSHI;HAYASHI AKIRA
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
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地址
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