Document Type and Number:
Japanese Patent JPS53157734
Kind Code:
U
Application Number:
JP6293577U
Publication Date:
December 11, 1978
Filing Date:
May 17, 1977
Export Citation:
International Classes:
G03B31/00; G11B20/04; (IPC1-7): G03B31/00; G11B5/033
Domestic Patent References:
| JPS50113232A | 1975-09-05 |