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 thermionic valve circuits
摘要
申请公布号
GB544447(A)
申请公布日期
1942.04.14
申请号
GB19400015168
申请日期
1940.10.11
申请人
STANDARD TELEPHONES AND CABLES LIMITED;BENT BULOW JACOBSEN
发明人
分类号
H03F1/54
主分类号
H03F1/54
代理机构
代理人
主权项
地址
您可能感兴趣的专利
SHEET PERFECTING PRESS
METHOD OF SEALING WITH RESIN, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, AND RESIN MATERIAL
INSTALLATION PLATE OF AIR CONDITIONER
ELECTRONIC TRACTION CONTROL SYSTEM
ROTATING CONNECTOR
CABLE PROTECTIVE PIPE AND ITS PIPING METHOD
BATTERY PACK
METHOD OF MANUFACTURING OPTICAL FIBER
IMAGE FORMATION APPARATUS
AUDIO DISK AND ITS REPRODUCING DEVICE
AUDIO DISK AND ITS REPRODUCING DEVICE
SOFTWARE ASSORTMENT MANAGEMENT DEVICE
OPTICAL FIBER WASHING DEVICE AND WASHING METHOD
FUEL INJECTION DEVICE
ELECTROSTATIC CHUCK
METHOD FOR FABRICATING CRYSTALLINE SEMICONDUCTOR FILM AND APPARATUS FOR MANUFACTURING THE SAME
ELECTRO-OPTIC DEVICE AND ITS MANUFACTURING METHOD, AS WELL AS ELECTRONIC DEVICE
SEMICONDUCTOR DEVICE AND ITS MANUFACTURING METHOD
STRUCTURE AND METHOD FOR BRAZING MACHINABLE SEALANT
AUTOMATIC IRRIGATION TYPE HOME KITCHEN GARDEN PLANTER
