Document Type and Number:
Japanese Patent JPS5422493
Kind Code:
U
Application Number:
JP9338777U
Publication Date:
February 14, 1979
Filing Date:
July 15, 1977
Export Citation:
International Classes:
G09F7/18; G09F9/00; G09F15/00; (IPC1-7): E01F9/01; G09F9/00; G09F15/00
Domestic Patent References:
| JPS5128085B2 | 1976-08-17 |