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发明名称
Verfahren zur Fernmeldewellenübertragung.
摘要
申请公布号
CH147956(A)
申请公布日期
1931.06.30
申请号
CHD147956
申请日期
1930.02.26
申请人
BELL TELEPHONE MANUFACTURING CO.
发明人
CO. BELL TELEPHONE MANUFACTURING
分类号
H04B1/66
主分类号
H04B1/66
代理机构
代理人
主权项
地址
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