Document Type and Number:
Japanese Patent JPS5331808
Kind Code:
Y2
Application Number:
JP7035572U
Publication Date:
August 08, 1978
Filing Date:
June 15, 1972
Export Citation:
International Classes:
G03B7/16; G03B7/14; G03B7/17; G03B15/03; G03B17/18; (IPC1-7): G03B7/16; G03B17/18