Document Type and Number:
Japanese Patent JPS4418222
Kind Code:
Y1
Application Number:
JP2663165U
Publication Date:
August 06, 1969
Filing Date:
April 06, 1965
Export Citation:
International Classes:
G03B7/26; G03B7/18; G03B9/08; G03B9/66; G03B9/68; G03B17/42; (IPC1-7): G03B17/42; G03B7/18; G03B9/08; G03B9/66; G03B9/68