Document Type and Number:
Japanese Patent JPS5310188
Kind Code:
Y2
Application Number:
JP11655172U
Publication Date:
March 17, 1978
Filing Date:
October 07, 1972
Export Citation:
International Classes:
G03B27/62; G03B21/08; G03B21/11; G03B23/08; G03G15/04; (IPC1-7): G03B21/11; G03B21/08; G03G15/04