Title:
【発明の名称】地中掘削装置
Document Type and Number:
Japanese Patent JPH0711238
Kind Code:
B2
Inventors:
Seya Fujio
Yuu Shomura
Yuu Shomura
Application Number:
JP19840186A
Publication Date:
February 08, 1995
Filing Date:
August 25, 1986
Export Citation:
Assignee:
Seya Fujio
Yuu Shomura
Yuu Shomura
International Classes:
E21B3/00; E21B10/08; E21D9/08; E21D9/087; (IPC1-7): E21D9/08; E21B10/08
Domestic Patent References:
| JP6045797U |
Attorney, Agent or Firm:
Kazuo Sato (2 outside)
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