Login| Sign Up| Help| Contact|

Patent Searching and Data


Document Type and Number:
Japanese Patent JPS6224299
Kind Code:
Y2
Application Number:
JP7497183U
Publication Date:
June 20, 1987
Filing Date:
May 18, 1983
Export Citation:
Click for automatic bibliography generation   Help
International Classes:
G09B19/12; (IPC1-7): G09B19/12