Document Type and Number:
Japanese Patent JPH03121435
Kind Code:
U
Application Number:
JP2993690U
Publication Date:
December 12, 1991
Filing Date:
March 23, 1990
Export Citation:
International Classes:
G01R31/36; G06F1/00; G06F1/28; (IPC1-7): G06F1/28; G06F1/00; G01R31/36