Document Type and Number:
Japanese Patent JPS5231343
Kind Code:
U
Application Number:
JP11632975U
Publication Date:
March 04, 1977
Filing Date:
August 22, 1975
Export Citation:
International Classes:
G06F15/02; G09B5/00; G09B19/02; (IPC1-7): G06F15/02; G09B5/00
Domestic Patent References:
| JPS4933A | 1974-01-05 |