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
VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG VON CHARAKTERISTISCHEN WERTEN EINER FERNSPRECHLEITUNG
摘要
申请公布号
DE2936722(A1)
申请公布日期
1980.04.10
申请号
DE19792936722
申请日期
1979.09.11
申请人
NORTHERN TELECOM LTD.
发明人
CHARLES ELLSON,JOHN
分类号
H04B3/46;H04M3/30;(IPC1-7):H04M3/30
主分类号
H04B3/46
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Device for transporting and/or storing radioactive materials and for the controlled release of oxygen in an enclosed housing
Apparatus for analysing fluid taken from a body
Microporous polyolefin film with improved meltdown property and preparing method thereof
Gasket molding system for membrane electrode assemblies
Aromatic vinyl ether based reverse-tone step and flash imprint lithography
Compression-molded product using plant material and method for manufacturing the same
Apparatus and method for recycling scrap, including automotive interior trim scrap
Reaction accelerator for synthesizing a conductive polymer, a conductive polymer, and a solid electrolytic capacitor
Polymerizable liquid crystal compound, polymerizable liquid crystal composition, polymer and film
Method for removing micro-bubbles and/or particles from liquid, liquid supply apparatus and immersion exposure apparatus
Systems and methods including amperometric and voltammetric duty cycles
Biosensor coating composition and methods thereof
Paper pulp pre-processor
Plasma processing apparatus and method
Fusible completion plug
Method for making a flexible packaging structure with a built-in opening and reclose feature
Method of water dispersing pregelatinized starch in making gypsum products
Composite article and method
Composition for metal surface treatment, metal surface treatment method and metal material
Permanent magnet and method of manufacturing same
