Document Type and Number:
Japanese Patent JPS57134793
Kind Code:
U
Application Number:
JP1978081U
Publication Date:
August 23, 1982
Filing Date:
February 14, 1981
Export Citation:
International Classes:
G11B17/028; G11B19/10; G11B25/04; (IPC1-7): G11B25/04
Domestic Patent References:
| JP50056105B |