Document Type and Number:
Japanese Patent JPS4887871
Kind Code:
A
Application Number:
JP1790772A
Publication Date:
November 17, 1973
Filing Date:
February 21, 1972
Export Citation:
International Classes:
G04G9/00; G01D7/00; G02F1/1335; G09F9/00
Other References:
ADPLIED PHYSICS LETTERS#V18#N4