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发明名称
Television intercommunication system
摘要
申请公布号
US2537173(A)
申请公布日期
1951.01.09
申请号
US19480009493
申请日期
1948.02.19
申请人
THE RAULAND CORPORATION
发明人
SZEGHO CONSTANTIN S.;POLANYI THOMAS G.
分类号
H04N5/257;H04N7/14
主分类号
H04N5/257
代理机构
代理人
主权项
地址
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