Document Type and Number:
Japanese Patent JPS5260333
Kind Code:
U
Application Number:
JP14612175U
Publication Date:
May 02, 1977
Filing Date:
October 28, 1975
Export Citation:
International Classes:
G03B13/26; G03B13/02; G03B13/06; G03B19/12; (IPC1-7): G03B13/02; G03B19/12