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经营范围
发明名称
Method and means for scrambling spoken messages
摘要
申请公布号
GB588825(A)
申请公布日期
1947.06.04
申请号
GB19440009468
申请日期
1944.05.17
申请人
"PATELHOLD" PATENTVERWERTUNGS- & ELEKTRO-HOLDING A.-G.
发明人
分类号
H04K1/04
主分类号
H04K1/04
代理机构
代理人
主权项
地址
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