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发明名称
Schaltungsanordnung fuer Fernsprech-stationen zur Verhinderung des Mithoerens der eigenen Sprache
摘要
申请公布号
DE1039104(B)
申请公布日期
1958.09.18
申请号
DE1952I005734
申请日期
1952.04.12
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
POCOCK LYNDALL CROSSTHWAITE;BEADLE ANTHONY CRISP
分类号
H04M1/58
主分类号
H04M1/58
代理机构
代理人
主权项
地址
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