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
Improvements in or relating to systems for amplifying low frequency currents
摘要
申请公布号
GB449874(A)
申请公布日期
1936.07.03
申请号
GB19350000215
申请日期
1935.01.03
申请人
LESLIE HAROLD PADDLE
发明人
分类号
H03F3/40
主分类号
H03F3/40
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Cleaner for pancake making utensils has open chamber with base and sidewalls, one of which has scraping grove for cleaning
Automated injection apparatus for mass inoculation of chicks, etc. has movable syringe and device sterilizing syringe needle at each injection
SWITCH MODE POWER SUPPLY WITH REDUCED INPUT CURRENT DISTORTION
GUN FOR ANESTHESIA
A METHOD OF AND A SYSTEM FOR ASSIGNING A DOWNLINK CHANNEL FOR MOBILE RADIO COMMUNICATION
MANUFACTURING METHOD OF A SEMICONDUCTOR DEVICE
READY TO WIRE TERMINAL ASSEMBLY
ENSEMBLE HAUT DE COLONNE AVEC ANTIVOL INTEGRE
SYSTEME DE COMMANDE D'ACTIONNEURS ELECTRIQUES DE SOUPAPES D'UN MOTEUR A DISTRIBUTION VARIABLE NOTAMMENT DE VEHICULE AUTOMOBILE
A COMPUTER PREPARED MICROPHONE AND HEADPHONE JACK INTHE FRONT
A APPARATUS TO DISPLAY FILTER CHANGING TIME AND THE QUALITY OF WATER FOR A WATER PURIFIER
CLUTCH APPARATUS OF THE WINCH FOR THE SLUICE
FILTRATION APPARATUS FOR SEWAGE
AN ECOLOGICAL WATERWAY FOR ECOSYSTEM PROTECTION WHICHCAN ALSO BE USED AS FISH POOL
A PEN WITH A COMPASS
UNITY DEVICE ONLY FOR A SIGN LAMP
FINGER PRESSURE PANNEL
DEVICE FOR AUTOMATIC PRODUCING FUNCTIONAL WATER
ORNAMENTAL MODEL SEE THROUGH A WRITTEN APPLIANCE
A PRESSURE COOKER
