Document Type and Number:
Japanese Patent JPS4412851
Kind Code:
Y1
Application Number:
JP7286766U
Publication Date:
May 28, 1969
Filing Date:
August 02, 1966
Export Citation:
International Classes:
G04B37/08; G04B37/00; G04B39/00; (IPC1-7): G04B37/00; G04B39/00