Document Type and Number:
Japanese Patent JPS5246735
Kind Code:
Y2
Application Number:
JP4048474U
Publication Date:
October 24, 1977
Filing Date:
April 09, 1974
Export Citation:
International Classes:
G03B13/26; G03B13/00; G03B13/02; G03B19/12; (IPC1-7): G03B13/00; G03B7/00