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
Railway signaling
摘要
申请公布号
US1855891(A)
申请公布日期
1932.04.26
申请号
US19300505487
申请日期
1930.12.30
申请人
THE UNION SWITCH & SIGNAL COMPANY
发明人
SASNETT EDWARD C.
分类号
B61L3/22
主分类号
B61L3/22
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Method and apparatus for adjusting the quantity of water deposited on a fine aggregate
Waste grid for a textile fiber processing machine
Compact vacuum cleaner
Pattern dyeing of textile materials such as carpet
Athletic shoulder pad
Framing system
Method of protecting a metallic surface susceptible to abrasion by rock-like material
Hydromechanical transmission comprising a hydrokinetic coupler when necessary in particular for direction of tracked vehicles
Trammel point attachment to steel tape rule
Anti-slip fixing device for ribbon-type straps and cables
(A) ;Injection site
Sprocket device for the fastening of ski-boots
SYNTHESIS OF DDB AND METHOD OF PHARMACEUTICAL MANUFACTURE
Process for transporting particulate material from a low pressure zone to a gas-containing elevated pressure zone
Apparatus for reproducing video signals
Charging generator controlling device
Pharmaceutical composition
Magnetic recording media with oxyfatty acid lubricant
Insect repellent, pheremonal, animal repellent, diagnostic or aroma enhancing compositions containing poly(epsilon caprolactone) having embedded therein functional substances
Aqueous compositions containing stabilized enzymes
