Document Type and Number:
Japanese Patent JPS5448680
Kind Code:
U
More Like This:
Application Number:
JP12265577U
Publication Date:
April 04, 1979
Filing Date:
September 12, 1977
Export Citation:
International Classes:
G04G9/00; G04B19/24; G04C17/00; G09D3/12; (IPC1-7): G04C17/00; G04B19/24; G09D3/12