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经营范围
发明名称
DIFFERENTIAL AMPLIFIER
摘要
申请公布号
US3530391(A)
申请公布日期
1970.09.22
申请号
USD3530391
申请日期
1967.08.18
申请人
BELL TELEPHONE LAB. INC.
发明人
ROBERT V. GOORDMAN
分类号
H03F3/45;(IPC1-7):H03F3/04;H03F3/68
主分类号
H03F3/45
代理机构
代理人
主权项
地址
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