Document Type and Number:
Japanese Patent JPS49141103
Kind Code:
U
Application Number:
JP3913873U
Publication Date:
December 05, 1974
Filing Date:
March 31, 1973
Export Citation:
International Classes:
G03B31/04; G03B31/00; G11B27/36; G11B31/00; G11B33/10; (IPC1-7): G03B31/00; G11B27/36; G11B31/00
Domestic Patent References:
JPS5229934A | 1977-03-07 |