Document Type and Number:
Japanese Patent JPS5411663
Kind Code:
U
Application Number:
JP8484377U
Publication Date:
January 25, 1979
Filing Date:
June 27, 1977
Export Citation:
International Classes:
G04G17/08; G04B19/06; G04B39/00; G04B39/02; (IPC1-7): G04B39/00; G04B19/06