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 picture and sound reproduction for schools
摘要
申请公布号
GB660821(A)
申请公布日期
1951.11.14
申请号
GB19480031287
申请日期
1948.12.02
申请人
GERALD HENRY GRATTAN-GUINNESS
发明人
分类号
G11B33/06
主分类号
G11B33/06
代理机构
代理人
主权项
地址
您可能感兴趣的专利
IMPLANTABLE DEVICES FOR THE TREATMENT OF INCONTINENCE AND METHODS OF USING THE SAME
PHTHALAZINONE DERIVATIVE
PHENYLALKYLAMINO CARBAMATE COMPOSITIONS
Filterscheiben mit Bajonettverbindung
ZUSAMMENSETZUNG UMFASSEND NADH/NADPH
CABINET FOR DISPLAYING GOODS, AND ELEMENTS FOR ITS CONSTRUCTION
CF BEARING WITH STEADY PITCHING MOMENT
REACTOR AND USE THEREOF FOR SOLUTION POLYMERIZATION AND BULK POLYMERIZATION
Nozzle for pulverizing liquid fuel
LOW TEMPERATURE INITIATORS FOR IMPROVING THE RUBBER PHASE VOLUME OF HIPS FORMULATIONS
METHOD FOR PRODUCING FLUORINATED ORGANIC COMPOUNDS
Modular solid-state laser platform based on coaxial package and corresponding assembly process
METHOD AND DEVICE FOR USE IN DECODING EXECUTABLE CODE
Apparatus for opening and closing a hatch cover, in particular for an armoured vehicle
Method of avoiding resonance in wind turbines
MOVABLE AWNING DEVICE AND WINDING ROLLER OF EXTERNAL CORNER CANVAS
Radio communication device, radio communication method and non-contact IC card reader/writer device
Machine for the production of batches of groups of rolls of products
Toluidine blue O compounds and their manufacture, analysis and use
Sprayhead with nozzles made by boring
