Document Type and Number:
Japanese Patent JPH0542512
Kind Code:
Y2
Application Number:
JP2290289U
Publication Date:
October 26, 1993
Filing Date:
February 27, 1989
Export Citation:
International Classes:
G06F3/045; G06F3/03; G06F3/044; G06K11/06; (IPC1-7): G06F3/03