Title:
円管を内側から補修する方法
Document Type and Number:
Japanese Patent JP4677481
Kind Code:
B2
Inventors:
Iki Riichi
Application Number:
JP2008250326A
Publication Date:
April 27, 2011
Filing Date:
September 29, 2008
Export Citation:
Assignee:
Kanto Natural Gas Development Co., Ltd.
International Classes:
E21B29/10; E21B43/00
Domestic Patent References:
| JP2001020653A | ||||
| JP2007182929A | ||||
| JP2008183874A |
Attorney, Agent or Firm:
Akio Miyazaki
Ishibashi Masayuki
Masaaki Ogata
Ishibashi Masayuki
Masaaki Ogata