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
TELEPHONE SYSTEM
摘要
申请公布号
CA461789(A)
申请公布日期
1949.12.13
申请号
CAD461789
申请日期
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
CHARLES S. RHOADS
分类号
主分类号
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Multi-eye image sensing apparatus
Defining tooth-moving appliances computationally
Method of estimating system dynamics by subsystem transfer function testing
Arrangement and system for enabling patient control of electrical therapies
Wheelchair access system
Heating system, method for heating a deposition or oxidation reactor, and reactor including the heating system
Water backpack and gun assembly
Dispensing device
Diffraction grating device manufacturing method, diffraction grating device manufacturing apparatus, and diffraction grating device
System and method for providing no answer detail service for telephone calls that are not completed
Process for the synthesis of n-(5-methylnicotinoyl)-4 hydroxypiperidine, a key intermediate of rupatadine
Il-5 inhibiting 6-azauracil derivatives
Method of characterizing an electronic device having unbalanced ground currents
Method for reducing skew in a real-time centroid calculation
Apparatus and method for continuous speech recognition on a PCMCIA card
Method and apparatus for non-destructive thermal inspection
Calibration method for system performance validation of automatic test equipment
Noise monitoring system
DVD reverse playback methods and apparatus
Color magnetic resonance imaging
