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
Train-dispatching system for railroads
摘要
申请公布号
US1794565(A)
申请公布日期
1931.03.03
申请号
US19270191734
申请日期
1927.05.16
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
WIGHT SEDGWICK N.
分类号
B61L21/06
主分类号
B61L21/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
CONTROLLER FOR VAPORIZING TYPE OIL BURNER
WARM-AIR HEATING DEVICE
MOTOR-DRIVEN FLOW REGULATING VALVE
PIPE MATERIAL FIXING MATERIAL
GATE VALVE
METHOD FOR MOLDING SUBSTRATE FOR OPTICAL DISK
EPICYCLE REDUCTION GEAR
LUBRICATING MECHANISM FOR TOROIDAL CONTINUOUSLY VARIABLE TRANSMISSION
REPRODUCING CONTROL DATA GENERATION DEVICE AND METHOD THEREFOR
FLOAT-TYPE LEVEL GAGE
METHOD AND DEVICE FOR MANUFACTURING FLANGE OF PHOTOGRAPHIC FILM CARTRIDGE
SHUTOFF VALVE DEVICE
Terminal block and control unit using same
Structure for an ornamental lamp
Warpwise unidirectional glass fabric with leno binding threads
Expandable volume food preparation and forming tool apparatus and method
Composition and method to remove asbestos
Water-spray separator
Anti-skid control apparatus with brake failure detection means
Image processing apparatus and image processing method for favorably enhancing continuous boundaries which are affected by noise