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
Frequency spacing in two-tone carrier system
摘要
申请公布号
US2676203(A)
申请公布日期
1954.04.20
申请号
US19500182650
申请日期
1950.09.01
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
PHELPS WALTER A.
分类号
H04L27/10
主分类号
H04L27/10
代理机构
代理人
主权项
地址
您可能感兴趣的专利
IMAGE RECORDING DEVICE
PRODUCTION OF LAMINATE PLATE HAVING ONE SIDE COVERED WITH COPPER
BACKFLOW PREVENTION DEVICE FOR INJECTION MOLDING MACHINE
WEAR DETECTION DEVICE OF MOLDING MACHINE DIE
METHOD AND DEVICE FOR CONTINUOUS CASTING OF METAL STRIP AND TUNDISH
SCREEN PRINTING DEVICE FOR CREAM SOLDER
DYNAMIC GAIN CORRECTION SYSTEM OF CRT PRINTING DEVICE
RESIN MOLDING DIE
SUCTION CASTING DEVICE
MANUFACTURE OF HEAT TRANSFER TUBE FOR HEAT EXCHANGER BY ROLLING METHOD
PRODUCTION OF EMULSION
CONTROL DEVICE FOR FUTON DRIER
AUTOMATIC WASHING MACHINE
CLOTHES DRYING DEVICE
WASHING MACHINE
PACHINKO MACHINE
TWO COAT ONE BAKE COATING
METHOD FOR FILTERING TREATMENT OF AQUEOUS PAINT AND APPARATUS THEREFOR
AUTOMATIC WASHING MACHINE
SMALL-BALL SHOOTING DEVICE
