Document Type and Number:
Japanese Patent JPS50127632
Kind Code:
A
Application Number:
JP3343574A
Publication Date:
October 07, 1975
Filing Date:
March 27, 1974
Export Citation:
International Classes:
G03B27/02; G03B15/00; G03G15/00; (IPC1-7): G03B15/00; G03B27/02