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
Composite oscillator and amplifier system
摘要
申请公布号
US2552721(A)
申请公布日期
1951.05.15
申请号
US19480042643
申请日期
1948.08.05
申请人
THE PENNSYLVANIA RESEARCH CORPORATION
发明人
KING JOHN G.
分类号
H03F3/66
主分类号
H03F3/66
代理机构
代理人
主权项
地址
您可能感兴趣的专利
MAGNETIC RECORDING MEDIUM AND ITS PRODUCTION
PCM RECORDING AND REPRODUCING DEVICE
AUTOMATIC CONTROLLER FOR WORKING MACHINE
HOT WATER FEEDER
ROOM HEATER USING HOTTWATER
SEALED REAR WHEEL BEARING
METHOD AND APPARATUS FOR WIPING WIRE OR STRIP TO BE PLATED
MANUFACTURE OF SOLAR HEAT SELECTION ABSORPTIVE MATERIAL
STRENG TIL TENNIS OG LIGNENDE KETSJERE
(B1) ;HEAT EXCHANGER AND METHOD OF MAKING THE SAME
PURIFICATION OF POLYETHER POLYOL
(A) ;SWITCH DEVICE FOR ELECTRIC STARTER OF INTERNAL COMBUSTION ENGINE
DEVICE OF ELECTRODEPOSITION FOR INNER SURFACE OF CYLINDER
PLATING METHOD OF BLACK CHROMIUM
ALARM DEVICE IN CEREAL GRAIN DRIER
ALARM DEVICE IN CEREAL GRAIN DRIER
ROTARY AUTOMATIC CONTINUOUS TREATING PLATING DRIER
CONTROLLER FOR BOILER WATER OF MULTITUBULAR TYPE ONCE THROUGH BOILER
VALVE FOR METAL VAPORRCONTAINED HIGH TEMPERATURE GAS
SHAFT SEALING ELEMENT
