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
Telegraph hub repeater
摘要
申请公布号
US2539550(A)
申请公布日期
1951.01.30
申请号
US19480051227
申请日期
1948.09.25
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
REA WILTON T.
分类号
H04L12/18;H04L25/04
主分类号
H04L12/18
代理机构
代理人
主权项
地址
您可能感兴趣的专利
DISPLAY DEVICE INCLUDING TIMING CONTROLLER AND DUPLEX COMMUNICATION METHOD OF THE SAME
OPTICAL ELEMENT OF LED DISPLAY APPARATUS AND LED DISPLAY APPARATUS
SHIFT REGISTER UNIT, GATE DRIVER CIRCUIT AND DISPLAY PANEL
SYSTEM AND METHOD FOR ENABLING A USER TO OVERCOME INTROVERSION
Systems, Methods, And Computer Program Products For Providing A Learning Aid Using Pictorial Mnemonics
METHOD AND APPARATUS FOR REPRESENTING AN AERIAL DELIVERY PATH
DYNAMICALLY CONFIGURABLE TRAFFIC CONTROLLERS AND METHODS OF USING THE SAME
WIRELESS COMMUNICATION CONTROL SYSTEM, WIRELESS COMMUNICATION CONTROL METHOD AND MOVABLE DEVICE
PERSONAL EMERGENCY RESPONSE SYSTEM WITH PREDICTIVE EMERGENCY DISPATCH RISK ASSESSMENT
SYSTEM AND METHOD FOR GENERATING AN ALERT BASED ON NOISE
CONTEXT-AWARE WEARABLE SAFETY SYSTEM
ALARM METHOD AND DEVICE
AUTOMATIC OBJECT DETECTION AND STATE ESTIMATION VIA ELECTRONIC EMISSIONS SENSING
SLOT MACHINE GAME AND SYSTEM WITH IMPROVED JACKPOT FEATURE
SYSTEMS AND METHODS FOR PATTERN GENERATION AND SECURITY FEATURES
ELECTRONIC CONTROL UNIT
DRAWER VISION SYSTEM
MONITORING APPARATUS FOR MACHINE TOOL
METHODS FOR BLENDING RESEMBLING BLOCKS AND APPARATUSES USING THE SAME
IMAGE PROCESSING APPARATUS AND METHOD
