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经营范围
发明名称
Anordnung zur drahtlosen Nachrichtenuebermittlung, insbesondere in Tunneln und Gruben
摘要
申请公布号
DE864576(C)
申请公布日期
1953.01.26
申请号
DE1951S023330
申请日期
1951.06.01
申请人
SIEMENS & HALSKE AKTIENGESELLSCHAFT
发明人
KADEN HEINRICH DR. PHIL.
分类号
B61L3/22;H04B5/00
主分类号
B61L3/22
代理机构
代理人
主权项
地址
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