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发明名称
Telephone systems
摘要
申请公布号
US3059055(A)
申请公布日期
1962.10.16
申请号
US19580732912
申请日期
1958.05.05
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
GOHOREL FERNAND PIERRE
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
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地址
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