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
互动教学分布系统装置
摘要
申请公布号
CN3361870D
申请公布日期
2004.04.07
申请号
CN03352763.6
申请日期
2003.07.23
申请人
博慧教育发展中心有限公司
发明人
余建宁;卢海康
分类号
19-07
主分类号
19-07
代理机构
中国专利代理(香港)有限公司
代理人
郑建晖
主权项
地址
香港中环
您可能感兴趣的专利
Signal reading out circuit.
Automatic gain-controlled amplifier circuit.
Method for raising any object lying on the bottom of the sea, a river or basin, and apparatus used thereby.
Color image display tube apparatus.
Mitre corner joint of wooden window frames and device for its fabrication.
High voltage hard glass halogen capsule.
Device for viewing colour stereoscopic tv images.
Compact coiled coil incandescent filament with supports.
Fault-tolerant computing system and method for detecting, localising and eliminating failing units in such a system.
Bituminous roofing sheet and its manufacturing method.
Transdermal flux enhancing compositions.
Method and diagnostic kit for diagnosis and/or prospective following of injury at the point of the pulmonary microcirculation.
Antibacterial agent for mammal use comprising cephalosporin derivatives as an effective ingredient.
Epoxy resins prepared by co-curing fluorinated epoxy prepolymers and non-fluorinated epoxy prepolymers.
Instrument for measuring the impedance for determining the change of the impedance of a capacitive sensor by dipping in a fluid.
Spindle mower.
Process for manufacturing hollow spheres or their bonded structures with reinforced walls.
NOVEL COMPOUND HAVING HERBICIDAL AND PLANT GROWTH-REGULATING CHARACTERISTICS AND PRODUCTION THEREOF AND COMPOSITION CONTAINING THE SAME
SACCHARIN SALT OF SUBSTITUTED AMINE
NOVEL COMPOUNDS DC-88A AND DC-89A1 AND PROCESS FOR THEIR PREPARATION.