Méthode d'enseignement à distance à l'aide de bandes magnétiques complétant un enseignement classique.,申请号OA19740055222-传众专利搜索

首页产品黄页商标征信

会员服务注册登录

法人/股东/高管

发明名称	Méthode d'enseignement à distance à l'aide de bandes magnétiques complétant un enseignement classique.
摘要
申请公布号	OA4721(A)	申请公布日期	1980.08.31
申请号	OA19740055222	申请日期	1974.06.15
申请人	SARTORIUS EWALD	发明人
分类号	G09B5/04;(IPC1-7):G09B5/04	主分类号	G09B5/04
代理机构		代理人
主权项
地址

您可能感兴趣的专利

Air curtain-assisted exhaust method and device thereof

Using music to influence a person's exercise performance

Traffic information gathering and query system and method thereof

Plasma display panel (PDP)

Shift control device of vehicular automatic transmission

ATTACHMENT FOR PREVENTING COVER FROM FALLING OFF

METHOD OF FORMING CONTACT

Process and apparatus for combinatorial synthesis

Device for retaining a fuel pump in a fuel container

Vented ceramic tip arrangement for use with a microarray

System and components for generating single-longitudinal-mode nanosecond laser beam having a wavelength in the range from 760nm to 790nm

Soft-switching power converter having power saving circuit for light load operations

Switching regulator

Medical devices having polymeric regions that contain fluorocarbon-containing block copolymers

Automatic needle device

Display device and fabrication method thereof

Prismatic battery

Super hybrid and enhanced electric cars

Two-step rocker arm having roller element cam followers