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 telephone systems
摘要
申请公布号
GB518883(A)
申请公布日期
1940.03.11
申请号
GB19380026051
申请日期
1938.09.06
申请人
STANDARD TELEPHONES AND CABLES LIMITED;GEORGE CLIFFORD HARTLEY
发明人
分类号
H04Q3/62
主分类号
H04Q3/62
代理机构
代理人
主权项
地址
您可能感兴趣的专利
VEHICLE SUSPENSION SYSTEM
INFORMATION PROCESSING SYSTEM AND INFORMATION PROCESSING METHOD
PICKUP-STYLE WORK VEHICLE
INSULATING POLYMER MATERIAL COMPOSITION
Beta secretase inhibitor
ADMINISTRATION DEVICE COMPRISING A PLUNGER ROD WITH A RETURN LOCK
Novel Receptor Antagonists and Their Methods of Use
Substrate structure of secure digital input/output module interface and its manufacturing method
Ophthalmic apparatus
BALE TOTE IMPLEMENT
HOSE-CLAMP ASSEMBLY
Sporoderm-Broken Polypore Production
METHOD AND SYSTEM FOR SELECTING A COMMUNICATION MEANS
APPARATUS, ASSEMBLY AND PROCESS FOR INJECTING FLUID INTO A SUBTERRANEAN WELL
High temperature test system
Circuit for equalizing charge unbalances in storage cells
Disposable splatter guard
PRESSING-TYPE INPUT DEVICE
Low-profile switch mechanism
APPARATUS FOR GENERATING AMPLIFIED COOLING AIR FLOWS
