Title:
【発明の名称】掘削装置
Document Type and Number:
Japanese Patent JP2981164
Kind Code:
B2
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Inventors:
KONO YASUHIRO
YOSHIKAWA YOSHUKI
YOSHIKAWA YOSHUKI
Application Number:
JP690096A
Publication Date:
November 22, 1999
Filing Date:
January 18, 1996
Export Citation:
Assignee:
KONO KOGYO JUGEN
KINUTA YOKO KK
KINUTA YOKO KK
International Classes:
E21B3/00; E21B7/00; E21B7/02; (IPC1-7): E21B3/00; E21B7/00
Domestic Patent References:
| JP7238766A | ||||
| JP5816289U | ||||
| JP53108104U | ||||
| JP250487U |
Attorney, Agent or Firm:
Fujikawa Tadashi