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
Communication system
摘要
申请公布号
US2290989(A)
申请公布日期
1942.07.28
申请号
US19410396839
申请日期
1941.06.06
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
NYQUIST HARRY
分类号
H04M1/515
主分类号
H04M1/515
代理机构
代理人
主权项
地址
您可能感兴趣的专利
MEDICAL TREATMENT INFORMATION STORING/RETRIEVING SYSTEM
SEMICONDUCTOR DEVICE FOR DATA COMMUNICATION CONTROL AND RADIO COMMUNICATION EQUIPMENT
CONTACTLESS ELECTRONIC MODULE FOR CARD OR LABEL
METHOD AND SYSTEM FOR COMPRESSING MOVING IMAGE INFORMATION
DEVICE AND METHOD FOR COMPRESSING DATA, COMPUTER- READABLE RECORDING MEDIUM WITH PROGRAM FOR DATA COMPRESSION RECORDED THEREON, AND DEVICE AND METHOD FOR EXPANDING DATA
CHEMICAL AND MECHANICAL GRINDING METHOD AND ABRASIVE
COMPOSITION FOR SNOW OR ICE ACCRETION-PREVENTING MEMBER AND SNOW OR ICE ACCRETION-PREVENTING MEMBER USING THE SAME
HYBRID VALVE DEVICE, SYSTEM AND METHOD FOR FLUID OPERATION
MONITORING DEVICE
ELECTRONIC CAMERA AND IMAGE SYSTEM
SEMICONDUCTOR DEVICE
MAGNETIC COAT CARRIER AND TWO-COMPONENT DEVELOPER
METHOD OF FORMING TRENCH MOS DEVICES AND TERMINATION STRUCTURE
INFORMATION RECORDING METHOD
SILENCER
OPTICAL MULTIPLEXER/DEMULTIPLEXER
SEMICONDUCTOR DEVICE AND METHOD OF MANUFACTURING THE SAME
SYSTEM AND METHOD FOR DETECTING AND COMMUNICATING OPERATIONAL CHARACTERISTIC OF TIRE TELECOMMUNICATIONALLY
METAL FOIL MOLDING
LIQUID SEALING TYPE VIBRATION CONTROL DEVICE
