Document Type and Number:
Japanese Patent JPS54126756
Kind Code:
U
Application Number:
JP2072678U
Publication Date:
September 04, 1979
Filing Date:
February 22, 1978
Export Citation:
International Classes:
G09B15/00; G10C3/00; G10G1/00; G10H1/00; (IPC1-7): G09B15/00; G10C3/00; G10G1/00