Document Type and Number:
Japanese Patent JPS5424334
Kind Code:
U
More Like This:
Application Number:
JP9876577U
Publication Date:
February 17, 1979
Filing Date:
July 20, 1977
Export Citation:
International Classes:
G03B31/06; G03B31/00; G11B31/00; (IPC1-7): G03B31/00
Domestic Patent References:
| JPS50115527A | 1975-09-10 |