Document Type and Number:
Japanese Patent JPS5176433
Kind Code:
U
Application Number:
JP11801174U
Publication Date:
June 16, 1976
Filing Date:
September 30, 1974
Export Citation:
International Classes:
G03B7/089; G03B7/28; G03B9/08; G03B19/12; (IPC1-7): G03B7/08; G03B9/08