Document Type and Number:
Japanese Patent JPS5389187
Kind Code:
U
Application Number:
JP17222276U
Publication Date:
July 21, 1978
Filing Date:
December 21, 1976
Export Citation:
International Classes:
G01D7/00; G02F1/15; G02F1/153; G02F1/17; G09F9/00; G09F9/30; (IPC1-7): G09F9/00; G02F1/17