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发明名称
Electromechanical amplifier
摘要
申请公布号
US2454812(A)
申请公布日期
1948.11.30
申请号
US19430512123
申请日期
1943.11.29
申请人
INTERNATIONAL STANDARD ELECTRIC CORPORATION
发明人
LALANDE MARC A.
分类号
H03F3/64;H03F13/00;H04M3/40
主分类号
H03F3/64
代理机构
代理人
主权项
地址
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