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 electrical signalling circuits
摘要
申请公布号
GB540071(A)
申请公布日期
1941.10.03
申请号
GB19400011593
申请日期
1940.07.12
申请人
ERICSSON TELEPHONES LIMITED;LAWRENCE HENRY DRYSDALE
发明人
分类号
H04Q1/38
主分类号
H04Q1/38
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Organic electroluminescent device
Dielectric compositions stable to reduction and dynamic random access memories with such dielectric compositions
Transfer pipe system
Method of operating of gas turbines and combined cycle power plants
Binocular telescope
Method of producting a metallic composite body and composite body
Device for quickly connecting a metal food conduit under pressure to a housing or the like
Thread based governor for time scheduled process execution
Multicircuit type instrument and split type current transformer for measuring various electric power quantities
Image fixing apparatus
Gallium nitride-type semiconductor device
Method of recording information on a record carrier, recording apparatus and record carrier
Complementary recording system using multi-scan
Ink jet print head and ink jet printing apparatus provided with said ink jet print head
A production method for lawn sod rolls and a device to perform the method
A woodworking machine
Digital photofinishing system with digital image processing
Novel metallized azo thioether dyes
Digital image authentication system
Method and apparatus for vibration reduction/control in a variable reluctance linear motor
