Document Type and Number:
Japanese Patent JPS4899121
Kind Code:
U
Application Number:
JP2224472U
Publication Date:
November 22, 1973
Filing Date:
February 23, 1972
Export Citation:
International Classes:
G01R1/02; G01R1/00; G01R1/30; G11B27/36; (IPC1-7): G11B27/36; G01R1/30