Document Type and Number:
Japanese Patent JPS52114732
Kind Code:
U
Application Number:
JP2230476U
Publication Date:
August 31, 1977
Filing Date:
February 26, 1976
Export Citation:
International Classes:
G03B7/083; G03B7/16; G03B9/70; G03B15/05; (IPC1-7): G03B15/05; G03B7/08; G03B7/16