Document Type and Number:
Japanese Patent JPS51112537
Kind Code:
U
Application Number:
JP3013675U
Publication Date:
September 11, 1976
Filing Date:
March 07, 1975
Export Citation:
International Classes:
G03B9/70; G03B15/03; G03B15/05; (IPC1-7): G03B15/05; G03B15/03