Document Type and Number:
Japanese Patent JPS4980211
Kind Code:
U
Application Number:
JP12457872U
Publication Date:
July 11, 1974
Filing Date:
October 28, 1972
Export Citation:
International Classes:
G11B15/093; G11B15/02; G11B15/10; G11B15/44; (IPC1-7): G11B15/02; G11B15/10