Document Type and Number:
Japanese Patent JPH0420135
Kind Code:
U
Application Number:
JP5840090U
Publication Date:
February 20, 1992
Filing Date:
May 31, 1990
Export Citation:
International Classes:
G06F3/0354; G06F3/039; G06K11/06; (IPC1-7): G06F3/033; G06K11/18
Domestic Patent References:
| JPS6160337B2 | 1986-12-20 | |||
| JPH0194421A | 1989-04-13 |
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