Document Type and Number:
Japanese Patent JPS5085311
Kind Code:
A
Application Number:
JP13258773A
Publication Date:
July 09, 1975
Filing Date:
November 28, 1973
Export Citation:
International Classes:
G03B31/04; G11B15/46; G11B31/00; (IPC1-7): G03B31/04; G11B15/46; G11B31/00
Domestic Patent References:
| JP44001131A |
Foreign References:
| US2678821A | 1954-05-18 |