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 SYSTEM
摘要
申请公布号
CA461321(A)
申请公布日期
1949.11.22
申请号
CAD461321
申请日期
申请人
BELL TELEPHONE LABORATORIES;WESTERN ELECTRIC COMPANY, INCORPORATED
发明人
JOSEPH A. KRECEK
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
METHOD FOR DEVELOPMENT PROCESSING OF PHOTOSENSITIVE MATERIAL
NOVEL ANTIBIOTIC SF-2197B AND ITS PREPARATION
GRANULAR SKIN WASHING AGENT
PORTABLE SMALL BAG
ONE-SIDE BENT CHAIN TRANSMISSION TYPE PUSHING-PULL OPERATION APPARATUS OF HYDRAULIC ACTUATOR DRIVE TYPE
CARRYING OBJECT TAKE-OUT POSITION DETERMINING MECHANISM
APPARATUS FOR DETERMINING INJECTION AMOUNT OF CHEMICALS
APPARATUS FOR AUTOMATIC FILLING CAULKING AGENT
PREPARATION OF HIGH-CONCENTRATION COAL/WATER SLURRY
PRODUCTION OF ALPHA-FEOOH NEEDLES
DISPLAY DEVICE FOR CAMERA
LAYING METHOD OF IMAGE GUIDE
MAGNETIC RECORDING AND REPRODUCTION DEVICE
CMOS DRIVER
LOGIC CIRCUIT
STUD USING PERMANENT MAGNET
MANUFACTURE OF MAGNETIC FILM
COVER MATERIAL FOR PREPARATION
FREQUENCY CONVERTER
WEAR-RESISTANT GLASS BEAD