Document Type and Number:
Japanese Patent JPS5119832
Kind Code:
U
Application Number:
JP9128974U
Publication Date:
February 13, 1976
Filing Date:
July 31, 1974
Export Citation:
International Classes:
G03B21/11; G03B1/00; G03B21/48; G03B31/00; (IPC1-7): G03B1/00; G03B21/48; G03B31/00