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经营范围
发明名称
Video signal selection means for transmitting signal and key information over a signal channel
摘要
申请公布号
US5031043(A)
申请公布日期
1991.07.09
申请号
US19900489291
申请日期
1990.03.05
申请人
THE GRASS VALLEY GROUP, INC.
发明人
ROCCO, ALFRED J.;MILAM, THOMAS T.
分类号
H04N5/272;H04N5/278;H04N9/74
主分类号
H04N5/272
代理机构
代理人
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