Document Type and Number:
Japanese Patent JPS5273781
Kind Code:
U
Application Number:
JP16193775U
Publication Date:
June 02, 1977
Filing Date:
November 28, 1975
Export Citation:
International Classes:
G01R33/038; G01R33/02; G01R33/035; G09B23/18; (IPC1-7): G01R33/02; G09B23/18