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发明名称
Magnetic telegraphone
摘要
申请公布号
US2235126(A)
申请公布日期
1941.03.18
申请号
US19390284155
申请日期
1939.07.13
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
TOWNE CHARLES C.
分类号
H04M1/64
主分类号
H04M1/64
代理机构
代理人
主权项
地址
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