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 or relating to electron discharge devices
摘要
申请公布号
GB469900(A)
申请公布日期
1937.08.03
申请号
GB19360003276
申请日期
1936.02.03
申请人
MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED;GEORGE FAIRBURN BRETT
发明人
分类号
H01J43/20
主分类号
H01J43/20
代理机构
代理人
主权项
地址
您可能感兴趣的专利
Pipe upsetting
Method of making electrical switching devices
Continuous web feeding means with spaced die engaging cut-out portion
METHODS OF PROCESSING AND REFINING CRUDE CHEMICAL FRACTIONS OBTAINED FROM BARK
COLOR TELEVISION
RECOVERY OF MANGANESE
MEASURING DEVICE
SYSTEM FOR ADJUSTING THE ORIENTATION OF A GYROSCOPE
STERILE AQUEOUS SOLUTIONS CONTAINING CYANACETHYDRAZIDE
SYSTEM FOR SUPPLYING OXYGEN TO BLAST FURNACE TUYERES
POWER-OPERATED STEERING MECHANISM FOR ROAD VEHICLES
SEPARATION OF MIXED XYLENES
VERTICAL SPEED COMPUTER AND ALTITUDE CONTROL
RESINOUS COMPOSITIONS
SHEET FEEDING APPARATUS
LIFTING STAGE
AGENT FOR THE THICKENING OR SOLIDIFICATION OF LIQUIDS
VISIBLE-BLADE ARC-EXTINGUISHING DISCONNECTING SWITCH
CIRCUIT INTERRUPTERS
CONTROLLING HEAT VALVE OF A FUEL GAS