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 metering equipment for telecommunication exchange systems
摘要
申请公布号
GB513286(A)
申请公布日期
1939.10.09
申请号
GB19380010563
申请日期
1938.04.06
申请人
STANDARD TELEPHONES AND CABLES LIMITED;ESMOND PHILIP GOODWIN WRIGHT
发明人
分类号
H04M15/38
主分类号
H04M15/38
代理机构
代理人
主权项
地址
您可能感兴趣的专利
METHOD FOR SELECTIVELY DETECTING ESCHERICHIA COLI GROUP
THERMOSETTING COATING SYSTEM, AND PREPARATION OF SAME
INK TANK
VEHICULAR STEERING DEVICE
STEERING-COLUMN DEVICE
INK JET PRINTER
LIQUID EJECTION RECORD HEAD, LIQUID EJECTION RECORD HEAD CARTRIDGE AND LIQUID EJECTION RECORDER
HEAD-UP DISPLAY DEVICE FOR VEHICLE
MEDICAL DEVICE WITH CABLE WHICH EXTENDS BETWEEN ROTARY PARTS
AIR CONDITIONING CONTROL METHOD FOR VEHICLE
PRODUCTION OF M-NITROBENZOIC ACID HAVING LOW WATER CONTENT
AIR BAG TYPE COLLISION PROTECTIVE DEVICE FOR CAR
GAS GENERATOR FOR AIR BAG
Strain gauge instrumentation device for in-core monitor housings
Timing extraction device and data transmission device using the timing extraction device
Circuits and methods for refreshing a dual bank memory
Method and apparatus for controlling an electromechanical load using a variable switching period and cyclic ratio
Spectroscope
Process for preparing sertraline intermediates
Calcium sulfonate or calcium hydrocarbyl sulfate accelerator for amine cure of epoxy resins