Document Type and Number:
Japanese Patent JPS5145988
Kind Code:
B1
Application Number:
JP12601574A
Publication Date:
December 06, 1976
Filing Date:
October 31, 1974
Export Citation:
International Classes:
G03B27/32; G03B21/11; (IPC1-7): G03B21/11; G03B27/32; G06F15/40