Document Type and Number:
Japanese Patent JPH0421142
Kind Code:
Y2
Application Number:
JP4752087U
Publication Date:
May 14, 1992
Filing Date:
March 30, 1987
Export Citation:
International Classes:
G06F3/041; G06F3/03; G06K11/06; (IPC1-7): G06F3/03; G06K11/06
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