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发明名称
Verfahren zum Sprechen ueber weite Entfernungen
摘要
申请公布号
DE595618(C)
申请公布日期
1934.04.16
申请号
DE1933F075087D
申请日期
1933.02.18
申请人
FELTEN & GUILLEAUME CARLSWERK ACT.-GES.
发明人
FISCHER DIPL.-PHYSIKER WALTER
分类号
H04B7/12
主分类号
H04B7/12
代理机构
代理人
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