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发明名称
Trunk circuit for attendant's cabinet
摘要
申请公布号
US2841653(A)
申请公布日期
1958.07.01
申请号
US19550550245
申请日期
1955.12.01
申请人
GENERAL DYNAMICS CORPORATION
发明人
PHARIS WILLIAM W.
分类号
H04M3/60
主分类号
H04M3/60
代理机构
代理人
主权项
地址
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