Title:
【発明の名称】掘削機
Document Type and Number:
Japanese Patent JP2645976
Kind Code:
B2
Inventors:
MATSUZAWA HAJIME
Application Number:
JP2938694A
Publication Date:
August 25, 1997
Filing Date:
February 28, 1994
Export Citation:
Assignee:
MATSUZAWA KIKO KK
SUZUKI GIKEN KOGYO KK
SUZUKI GIKEN KOGYO KK
International Classes:
E21B7/00; E21B7/20; E21B15/00; (IPC1-7): E21B7/00; E21B7/20; E21B15/00
Domestic Patent References:
| JP4203091A | ||||
| JP63194995U |
Attorney, Agent or Firm:
Kubo Tsukasa