Document Type and Number:
Japanese Patent JPS4890695
Kind Code:
A
Application Number:
JP2251172A
Publication Date:
November 26, 1973
Filing Date:
March 03, 1972
Export Citation:
International Classes:
G03G17/04; G02F1/167; G09F9/37; G09F9/30; (IPC1-7): G09F9/30