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
Centralized traffic controlling system for railroads
摘要
申请公布号
US2067145(A)
申请公布日期
1937.01.05
申请号
US19320648095
申请日期
1932.12.20
申请人
GENERAL RAILWAY SIGNAL COMPANY
发明人
POWELL WINFRED T.
分类号
B61L7/08
主分类号
B61L7/08
代理机构
代理人
主权项
地址
您可能感兴趣的专利
SOLAR CELL
ALGAE CULTIVATING DEVICE
An improved method of ion exchange and apparatus for carrying out said method.
Apparatus for mitre cutting and joining profiles together.
Process and reactor for exothermic heterogeneous synthesis with several catalytic beds and with the external recovery of reaction heat.
Process for the preparation of succinic anhydride derivatives.
ADAPTOR FOR PLUGS CONNECTED WITH CO-AXIAL CABLES
AMPOULES
BULKING AGENT.
FAULTY SECTION DETECTOR/CONTROLLER
PRODUCTION OF 02, 2'-ANHYDRO-1-(BETA-D- ARABINOFRANOSYL) THIMINE
PRODUCTION OF CHLORINATED DERIVATIVE
Process for producing structures by bonding together synthetic corundum single crystals.
Stand for a road sign.
Semiconductor diffusion furnace inner tube.
Process and apparatus for dehydrating water-containing masses.
A method for neutralizing sulfuric acid containing zinc ion.
A process for preparing cephem prodrug esters.
HIV protease inhibitors useful for the treatment of aids.
STACKED TYPE PIEZO-ELECTRIC DEVICE AND METHOD OF ITS USE