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
Secondary electron emitter and method of making it
摘要
申请公布号
US2146099(A)
申请公布日期
1939.02.07
申请号
US19370143946
申请日期
1937.05.21
申请人
N. V. PHILIPS' GLOEILAMPENFABRIEKEN
发明人
BOER JAN HENDRIK DE;BRUINING HAJO;PRAKKE FRITS;GESSEL KAREL MARINUS VAN
分类号
H01J1/32;H01J9/12
主分类号
H01J1/32
代理机构
代理人
主权项
地址
您可能感兴趣的专利
THIN FILM TRANSISTOR FOR ACTIVE MATRIX TYPE ORGANIC LIGHT EMITTING DIODE DEVICE
METHOD FOR MANUFACTURING POLYSILICON THIN FILM TRANSISTOR
TUBE FIXING APPARATUS
TABLE EXCHANGING DEVICE FOR LASER GENERATOR
METHOD FOR MANUFACTURING CAPACITOR OF SEMICONDUCTOR DEVICE
METHOD FOR TRANSMITTING VOICE DATA IN REAL TIME AT OPEN MULTISERVICE SWITCHING SYSTEM
METHOD FOR MANUFACTURING SEMICONDUCTOR DEVICE
METHOD FOR MANAGING SESSION IN EXTERNAL AGENT FOR SUPPORTING MOBILE IP ADDRESS
METHOD FOR TAKING EMERGENCY MEASURES IN CASE OF BEING SHORT OF BATTERY IN CONVERSATION
METHOD FOR MANUFACTURING IMAGE SENSOR USING SALICIDE
THERMOPLASTIC RESIN COMPOSITION WITH IMPROVED WEATHER RESISTANCE AND IMPACT RESISTANCE AND PREPARATION METHOD THEREOF
IP NETWORK CONNECTION STRUCTURE IN VOIP GATEWAY SYSTEM
PANEL ASSEMBLY FOR RETAINING WALL AND TEMPORARY CONSTRUCTION METHOD THEREOF
METHOD FOR REMOVING MOISTURE/FROST IN GLASS OF VEHICLE
WIRING STRUCTURE OF DATA DRIVING CIRCUIT FOR LCD
MONITORING SYSTEM OF DRIVING VEHICLE STOP LINE
METHOD FOR PROCESSING ISDN CALL END
COMPOSITION OF MICROEMULSION PRECONCENTRATE
BROTH INFILTRATION PROTECTION BURNER RING STRUCTURE OF GAS COOKING APPARATUS
LCD
