Document Type and Number:
Japanese Patent JPH0222647
Kind Code:
Y2
Application Number:
JP6860685U
Publication Date:
June 19, 1990
Filing Date:
May 09, 1985
Export Citation:
International Classes:
G01F1/48; (IPC1-7): G01F1/48
Next Patent: METHOD FOR HOLE ERASING OF HOLE BURNING SUBSTANCE