Document Type and Number:
Japanese Patent JPS61143166
Kind Code:
U
Application Number:
JP2748885U
Publication Date:
September 04, 1986
Filing Date:
February 26, 1985
Export Citation:
International Classes:
G09B11/04; (IPC1-7): G09B11/04
Domestic Patent References:
| JPS5142425U | 1976-03-29 |