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
Improvements in and relating to railway signalling
摘要
申请公布号
GB356339(A)
申请公布日期
1931.09.10
申请号
GB19300018842
申请日期
1930.06.20
申请人
HARRY EDWARD GRESHAM;JAMES NEVILLE GRESHAM;ALEXANDER SPENCER
发明人
分类号
B61L3/04
主分类号
B61L3/04
代理机构
代理人
主权项
地址
您可能感兴趣的专利
LOW-ALLOY STEEL POWDER FOR POWDER METALLURGY AND ITS SINTERED MOLDING AND TEMPERED MOLDING
NONCONTACT HOLDING MECHANISM WITH WORK DETECTING FUNCTION
MANUFACTURE OF CARBIDE ABRASIVE GRAIN EDGER
SYNCHRONIZING SEPARATOR CIRCUIT
DRIVER FOR SCANNER
CLEANING DEVICE FOR ELECTRONIC BLACKBOARD
COMMUNICATION EQUIPMENT
TRAFFIC INFORMATION RECEIVER
METHOD AND APPARATUS FOR CONTINUOUS GRANULATION OF HIGH WATER ABSORBING RESIN POWDER
MEJORAS EN DISPOSITIVO DOSIFICADOR DE GEL
CIERRE SURTIDOR PARA UNA BOTELLA QUE CONTIENE UN PRODUCTO FLUIBLE
Process for manufacturing a tie.
Oil-soluble antioxidant mixture.
CALCITONIN-CONTAINING EMULSION FOR NASAL ADMINISTRATION
SYNERGISTIC FUNGICIDAL COMPOSITIONS CONTAINING PROPICONAZOLE AND TEBUCONAZOLE
Process for the preparation of esters of beta-ketocarboxylic acids.
AVERMECTIN DERIVATIVES AND PARASITICIDAL COMPOSITIONS
SLIDING DOOR COMPARTMENT WITH MOVABLE ADJUSTING MEMBER
POLYPEPTIDE AND PROTEIN COMPLEX OF GP98 CELL SURFACE GLYCOPROTEIN; MONOCLONAL ANTIBODY AGAINST IT AND THEIR USE
GIBBON APE LEUKAEMIA VIRUS (GALV) RECEPTOR PROTEIN AND ITS IDENTIFICATION, DNA ENCODING IT AND ITS USE IN REGULATING VIRAL ENTRY INTO CELLS