Document Type and Number:
Japanese Patent JPS55174634
Kind Code:
U
Application Number:
JP6351380U
Publication Date:
December 15, 1980
Filing Date:
May 08, 1980
Export Citation:
International Classes:
G06C3/00; B42D15/00; G09B29/00; (IPC1-7): G06C3/00; G09B29/00
Domestic Patent References:
| JPS4811887B1 | 1973-04-17 |