Title:
DRILL
Document Type and Number:
Japanese Patent JPS57180787
Kind Code:
A
Inventors:
ISHIHARA MASUO
Application Number:
JP6583281A
Publication Date:
November 06, 1982
Filing Date:
April 30, 1981
Export Citation:
Assignee:
JAPAN DRIVE IT
International Classes:
E21B10/00; E21B10/32; (IPC1-7): E21B10/00