Document Type and Number:
Japanese Patent JPH0338055
Kind Code:
B2
Inventors:
ITO HIROSHI
Application Number:
JP21488183A
Publication Date:
June 07, 1991
Filing Date:
November 15, 1983
Export Citation:
Assignee:
NGK INSULATORS LTD
International Classes:
B23H9/00; B23P13/00
Next Patent: JPH0338056