Document Type and Number:
Japanese Patent JPS5241655
Kind Code:
U
Application Number:
JP12837075U
Publication Date:
March 24, 1977
Filing Date:
September 17, 1975
Export Citation:
International Classes:
G03B19/18; G03B21/36; G03B31/00; G03B31/02; (IPC1-7): G03B21/36; G03B7/00