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发明名称
Modulation system
摘要
申请公布号
US2549828(A)
申请公布日期
1951.04.24
申请号
US19450613694
申请日期
1945.08.30
申请人
LEPPERT MELVIN L
发明人
LEPPERT MELVIN L.
分类号
H03C1/22;H04N5/40
主分类号
H03C1/22
代理机构
代理人
主权项
地址
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