Document Type and Number:
Japanese Patent JPS5033043
Kind Code:
U
Application Number:
JP8455273U
Publication Date:
April 10, 1975
Filing Date:
July 20, 1973
Export Citation:
International Classes:
G03B1/18; G03B1/38; G03B31/06; (IPC1-7): G03B31/06; G03B1/38