Title:
【考案の名称】掘削軸装置
Document Type and Number:
Japanese Patent JPH0735911
Kind Code:
Y2
Inventors:
Hiroshi Ikeda
Application Number:
JP9414591U
Publication Date:
August 16, 1995
Filing Date:
October 21, 1991
Export Citation:
Assignee:
Hiroshi Ikeda
International Classes:
E21B3/02; E21B17/10; E21B33/12; (IPC1-7): E21B17/10; E21B33/12
Domestic Patent References:
| JP379387U |
Attorney, Agent or Firm:
Fujimori Michio
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