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发明名称
Telephone appliance
摘要
申请公布号
US2541712(A)
申请公布日期
1951.02.13
申请号
US19490079995
申请日期
1949.03.07
申请人
NEBLETT THEODORE E
发明人
NEBLETT THEODORE E.
分类号
H04M1/06
主分类号
H04M1/06
代理机构
代理人
主权项
地址
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