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发明名称
Mehrfachsperrenanordnung fuer Gegensprechschaltungen mit erhoehtem Endpegel
摘要
申请公布号
DE724825(C)
申请公布日期
1942.09.07
申请号
DE1938B185657D
申请日期
1938.12.21
申请人
PAUL BARKOW
发明人
BARKOW PAUL
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
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地址
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