Document Type and Number:
Japanese Patent JPS5149156
Kind Code:
U
Application Number:
JP12201474U
Publication Date:
April 13, 1976
Filing Date:
October 09, 1974
Export Citation:
International Classes:
G09B7/07; G09B7/073; (IPC1-7): G09B7/073
Domestic Patent References:
| JPS49110545A | 1974-10-21 |