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 electric discharge vacuum tubes
摘要
申请公布号
GB747855(A)
申请公布日期
1956.04.18
申请号
GB19520018083
申请日期
1952.07.17
申请人
EDWARD EMANUEL SHELDON
发明人
分类号
H01J29/38;H01J31/50
主分类号
H01J29/38
代理机构
代理人
主权项
地址
您可能感兴趣的专利
PRODUCTION METHOD FOR SINTERED ORE
CORROSION RESISTANT MEMBER AND CORROSION PREVENTION METHOD
MULTICOLOR THERMOCHROMIC FIBER
METHOD FOR INCREASING HARDNESS OF METALLIC MATERIAL, METALLIC MATERIAL PRODUCED BY THE METHOD, METHOD FOR IMPROVING REFRACTORINESS OF REFRACTORY, AND REFRACTORY PRODUCED THEREBY
METHOD FOR PREVENTING CORROSION OF COATED STEEL PRODUCT
CURABLE COMPOSITION FOR INJECTION MOLDING
AMINE CATALYST FOR PRODUCING POLYURETHANE
METHOD FOR PRODUCING OPTICAL MATERIAL
SPRAYING AQUEOUS COMPOSITION INCLUDING NEGATIVE ION GENERATING SUBSTANCE
INSULATING MEMBER FOR EDGE PART OF ELECTROLYTIC REFINING ELECTRODE PLATE
WOOD PAINT AND WOOD ARTICLE COATED WITH THE SAME
WATERPROOF SHEET
FILM
RESIN COMPOSITION, PREPREG, AND LAMINATED BOARD
METHOD FOR CONVERTING INFLAMMABLE WASTE MATERIAL INTO SOLID FUEL
POLYAMIDE-IMIDE RESIN PASTE AND COATING FILM-FORMING MATERIAL COMPRISING THE SAME
CATIONIC ELECTRODEPOSITION COATING AND METHOD FOR CONTROLLING GLOSS LEVEL OF ELECTRODEPOSITION COATING FILM
LOW-GLOSS COATING, METHOD FOR FORMING LOW-GLOSS COATING FILM, LOW-GLOSS COATING FILM AND METHOD FOR CONTROLLING GLOSS LEVEL OF COATING FILM
CROSSLINKED THERMOPLASTIC ELASTOMER COMPOSITION AND METHOD FOR PRODUCING THE SAME
COMPOSITION COMPOSED OF OH GROUP-CONTAINING FLUORINE COPOLYMER
