Document Type and Number:
Japanese Patent JPH0121726
Kind Code:
Y2
Application Number:
JP7411881U
Publication Date:
June 28, 1989
Filing Date:
May 21, 1981
Export Citation:
International Classes:
B24B3/38; B24B47/22; (IPC1-7): B24B3/38; B24B47/22
Next Patent: JPH0121727