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发明名称
Telephone system
摘要
申请公布号
US2916554(A)
申请公布日期
1959.12.08
申请号
US19560574415
申请日期
1956.03.28
申请人
GENERAL DYNAMICS CORPORATION
发明人
PHARIS WILLIAM W.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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