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
Telephone system
摘要
申请公布号
US1960037(A)
申请公布日期
1934.05.22
申请号
US19320629452
申请日期
1932.08.19
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
WILLIAMS SAMUEL B.;SCNDDER FREDERICK J.
分类号
H04Q3/42
主分类号
H04Q3/42
代理机构
代理人
主权项
地址
您可能感兴趣的专利
BONE CONDUCTION SPEAKER
FIBROUS STRUCTURE
SUBSTRATE TREATED WITH COLOR DEVELOPMENT, AND SUBSTRATE COLOR DEVELOPMENT TREATMENT METHOD FOR SAME
Blade position registering apparatus
METHOD OF POWER INFORMATION REPORTING FOR ENHANCING UPLINK POWER CONTROL
VITAMIN D RECEPTOR AGONISTS TO TREAT DISEASES INVOLVING CXCL12 ACTIVITY
MULTI-LANGUAGE INFORMATION RETRIEVAL AND ADVERTISING
ELECTRODE CONSUMPTION MONITORING SYSTEM
PARTIAL VACUUM FORMING METHOD USING PARTIAL OVERLAY OF DECORATIVE FILM
TRAY
MEDICAL SHAFT-TYPE INSTRUMENT WITH A SUPPORT PLATE/BRIDGE ON THE RETAINING RAIL
HOUSING FOR AIR- CONDITIONING DEVICES
SHUTTER MECHANISM FOR COVERING A WING DEPLOYMENT OPENING
MANIPULATOR SYSTEM
CHROMANYL DERIVATIVES FOR TREATING MITOCHONDRIAL DISEASE
INFORMATION MANAGEMENT SYSTEM
BIOPRESERVATION METHODS FOR BEVERAGES AND OTHER FOODS
SCOOTER-TYPE VEHICLE
APPARATUS AND METHOD FOR EVACUATING A SYSTEM
PROVIDING A PHARMACOKINETIC DRUG DOSING REGIME