Document Type and Number:
Japanese Patent JPS5478509
Kind Code:
U
More Like This:
Application Number:
JP15220877U
Publication Date:
June 04, 1979
Filing Date:
November 15, 1977
Export Citation:
International Classes:
G11B31/00; G11B17/22; G11B19/08; G11B20/02; (IPC1-7): G11B17/22; G11B5/033
Domestic Patent References:
| JPS514642U | 1976-01-14 |
Foreign References:
| US3990710A | 1976-11-09 |