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 thermionic valves
摘要
申请公布号
GB423932(A)
申请公布日期
1935.02.04
申请号
GB19330021653
申请日期
1933.08.02
申请人
ELECTRIC & MUSICAL INDUSTRIES LIMITED;ISAAC SHOENBERG;CABOT SEATON BULL;SIDNEY RODDA
发明人
分类号
H01J19/02
主分类号
H01J19/02
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Use for bis-heterocyclic compounds and pharmaceutical compositions containing same
Cocaine receptor binding ligands
5-substituted tetrahydrobenzimidazole compounds
Photosensitive compositions containing a polymer with carboxyl and hydroxyphenyl groups, a compound with multiple ethylenic unsaturation and a photo-acid generator
Electrophotographic photoconductor
Third-order nonlinear optical main chain polymer material and method for preparing the same
Non-formaldehyde durable press finishing for cellulosic textiles with phosphinocarboxylic acid
AMINATED ALKOXYLATED SATURATED POLYBUTADIENE AND ITS PRODUCTION
PHOSPHONIUM SALT,ITS PREPARATION AND METHOD OF ITS APPLICATION
PRODUCTION OF 3,4-METHYLENEDIOXYMANDELIC ACID
OPTICALLY ACTIVE 1,4-DIHYDROPYRIDINE COMPOUND AND PRODUCTION OF THE SAME
FLAME RETARDANT STYRENIC RESIN COMPOSITION
PRODUCTION OF ANTIFOGGING COATED ARTICLE
PRODUCTION OF HIGH-RIGIDITY PROPYLENE-ETHYLENE BLOCK COPOLYMER
CATALYST FOR OLEFIN POLYMERIZATION
PRODUCTION OF ALKANESULFONYL CHLORIDE
ACRYLONITRILE DIMER, ACRYLONITRILE DERIVATIVE, THEIR PRODUCTION AND POLYMERIZABLE COMPOSITION
PRODUCTION OF N-ALKENYLCARBOXAMIDE
PRODUCTION OF TRANS-4-ALKYLCYCLOHEXYLAMINE
TRANSPORTATION OF POLYMERIZABLE FLUID
