首页
产品
黄页
商标
征信
会员服务
注册
登录
全部
|
企业名
|
法人/股东/高管
|
品牌/产品
|
地址
|
经营范围
发明名称
Triode parametric amplifier
摘要
申请公布号
US3138765(A)
申请公布日期
1964.06.23
申请号
US19600005841
申请日期
1960.02.01
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
BRIDGES THOMAS J.;HEMPSTEAD CHARLES F.;QUATE CALVIN F.
分类号
H03F3/54;H03F7/04
主分类号
H03F3/54
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Improvements in or relating to continuously acting absorption machines for producing cold or heat
Improvements in or relating to control system for radio instruments
Improvements in bust supports
Improvements in or relating to optical systems for photographic cameras
Improved means for the control of aircraft
Improvements in burners for heavy oils and the like fuels
Sheet piling
Improvements relating to portable electrical connectors
Improvements in moulding strips
Improvements in high pressure steam locomotives
Improvements in and relating to wardrobes and the like
Improvements in bobbin changing contrivances for spinning frames
Improvements in paper carriages for bookkeeping machines or typewriters
Improvements in envelopes for gramophone records
Reduction of echo effects in electric signalling systems
Improvements in or relating to the manufacture and use of insulating material
Improvements in or relating to contrivances for use in making pastry
A refrigerated ice-cream receptacle
Improvements in or relating to apparatus for tipping and discharging wagons
Improvements in and relating to signalling devices or direction indicators for vehicles