Document Type and Number:
Japanese Patent JPS6219995
Kind Code:
B2
Inventors:
MIKAMI YOSHIICHI
Application Number:
JP4187482A
Publication Date:
May 01, 1987
Filing Date:
March 17, 1982
Export Citation:
Assignee:
FURUKAWA KOGYO KK
International Classes:
B25D9/12; E21B1/00; E21B1/26; E21B1/30