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
US2311800(A)
申请公布日期
1943.02.23
申请号
US19410420445
申请日期
1941.11.26
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
WILLIAMS SAMUEL B.
分类号
H04Q3/00
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
您可能感兴趣的专利
WAVELENGTH BRANCHING FILTER AND LIGHT SPECTRUM ANALYZER AND LIGHT BAND PATH FILTER
HORIZONTAL DEFLECTION CIRCUIT
IMAGE PROCESSING UNIT
DIELECTRIC RESONATOR, DIELECTRIC FILTER AND PRODUCTION OF DIELECTRIC LAMINATE ELEMENT
GAS LASER DEVICE
SYSTEM AND METHOD FOR PROCESSING IMAGE
PIXEL INTERPOLATION PROCESSING METHOD AND UNIT THEREFOR, AND DIGITAL PICTURE DISPLAY DEVICE PROVIDED WITH THEM
DEVELOPING DEVICE AND IMAGE FORMING DEVICE
IMAGE INPUT DEVICE AND METHOD
PRINTING SYSTEM
PICTURE PROCESSOR
BOARD MOUNT CONNECTOR
MAGNETOSTRICTION DETECTION TYPE POWER SENSOR
UNIVERSAL HEAD DEVICE
METHOD AND DEVICE FOR TREATING SUBSTRATE SURFACE
MECHANISM AND METHOD FOR HOLDING PYRAMIDAL TRAPEZOIDAL LIGHT GUIDE
MANUFACTURE OF MULTILAYER PRINTED WIRING BOARD
MAGNETIC MATERIAL AND MANUFACTURE THEREOF
MAGNETIC RECORDING MEDIUM AND ITS MANUFACTURE
CHARGED-PARTICLE BEAM MASK AND MANUFACTURE THEREOF AND OPERATING METHOD OF CHRGED-PARTICLE BEAM LITHOGRAPHY SYSTEM
