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发明名称
Telephone set
摘要
申请公布号
US2330548(A)
申请公布日期
1943.09.28
申请号
US19380221702
申请日期
1938.07.28
申请人
GEORG BINIEK;HEINRICH LANGNER
发明人
BINIEK GEORG;LANGNER HEINRICH
分类号
H04M17/02
主分类号
H04M17/02
代理机构
代理人
主权项
地址
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