Document Type and Number:
Japanese Patent JPS5526452
Kind Code:
B2
Application Number:
JP3033072A
Publication Date:
July 14, 1980
Filing Date:
March 28, 1972
Export Citation:
International Classes:
G03B27/02; G03B15/05; G03B27/00; G03B27/16; G03D13/00; H05B41/32