Document Type and Number:
Japanese Patent JPS5455286
Kind Code:
U
Application Number:
JP12879677U
Publication Date:
April 17, 1979
Filing Date:
September 24, 1977
Export Citation:
International Classes:
G10K9/12; G04C3/00; G04C21/02; G04C21/12; G10K9/122; G10K15/04; (IPC1-7): G10K9/12; G04C3/00