Document Type and Number:
Japanese Patent JPS51106131
Kind Code:
U
Application Number:
JP2480075U
Publication Date:
August 25, 1976
Filing Date:
February 21, 1975
Export Citation:
International Classes:
G03B19/18; G03B23/02; G03B31/00; (IPC1-7): G03B31/00; G03B23/02