Document Type and Number:
Japanese Patent JPS4953468
Kind Code:
A
Application Number:
JP9457772A
Publication Date:
May 24, 1974
Filing Date:
September 22, 1972
Export Citation:
International Classes:
G04G13/00; G04G13/02
Domestic Patent References:
| JPS4940171A | 1974-04-15 | |||
| JPS4428769Y1 | 1969-11-28 |