Title:
【発明の名称】液圧作動式さく岩機における打撃装置
Document Type and Number:
Japanese Patent JPS5842353
Kind Code:
B2
Inventors:
NAKAMURA MAKOTO
Application Number:
JP545478A
Publication Date:
September 19, 1983
Filing Date:
January 20, 1978
Export Citation:
Assignee:
TOYO KOGYO CO
International Classes:
B25D9/12; E21B1/00; E21B1/26; (IPC1-7): E21C3/20
Attorney, Agent or Firm:
Aoyama