Document Type and Number:
Japanese Patent JPS54113432
Kind Code:
U
Application Number:
JP622078U
Publication Date:
August 09, 1979
Filing Date:
January 21, 1978
Export Citation:
International Classes:
G03B21/00; G03B23/00; G11B5/008; G11B31/00; (IPC1-7): G03B21/00; G03B23/00; G11B5/008
Domestic Patent References:
| JPS473580U | 1972-09-05 |