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发明名称
Radio transmission systems
摘要
申请公布号
US1881483(A)
申请公布日期
1932.10.11
申请号
US19300460246
申请日期
1930.06.10
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
GILLETT GLENN D.
分类号
H04H20/67
主分类号
H04H20/67
代理机构
代理人
主权项
地址
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