Document Type and Number:
Japanese Patent JPS54130412
Kind Code:
U
Application Number:
JP2707678U
Publication Date:
September 10, 1979
Filing Date:
March 03, 1978
Export Citation:
International Classes:
G04G9/00; G04C17/00; G04G99/00; G11B27/34; (IPC1-7): G11B27/34; G04C17/00