Title:
【考案の名称】リーダー式掘削機
Document Type and Number:
Japanese Patent JPH0726478
Kind Code:
Y2
Inventors:
Teruo Matsumoto
Application Number:
JP4550391U
Publication Date:
June 14, 1995
Filing Date:
May 22, 1991
Export Citation:
Assignee:
Masago Industry Co., Ltd.
International Classes:
E21B15/00; E21B7/00; (IPC1-7): E21B15/00; E21B7/00
Attorney, Agent or Firm:
Sasaki Isao
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