Document Type and Number:
Japanese Patent JPS5117025
Kind Code:
U
Application Number:
JP8777574U
Publication Date:
February 07, 1976
Filing Date:
July 25, 1974
Export Citation:
International Classes:
G02B6/00; G02B6/02; H01B9/00; (IPC1-7): G02B5/14; H01B9/00