Title:
コアボーリング装置及びこれを用いた貫通孔の穿設方法
Document Type and Number:
Japanese Patent JP4800364
Kind Code:
B2
Inventors:
Tatsuhiro Kocho
Matsui City
Takeyuki Momono
Toshiya Nomura
Nobuhiro Ikeda
Matsui City
Takeyuki Momono
Toshiya Nomura
Nobuhiro Ikeda
Application Number:
JP2008247966A
Publication Date:
October 26, 2011
Filing Date:
September 26, 2008
Export Citation:
Assignee:
Okumura Gumi Co., Ltd.
International Classes:
E21B10/02; B28D1/14
Domestic Patent References:
| JP3017035B2 | ||||
| JP3054889U | ||||
| JP3039932U | ||||
| JP8302685A | ||||
| JP11179720A | ||||
| JP7247778A | ||||
| JP59220593A | ||||
| JP10180744A | ||||
| JP10317424A | ||||
| JP2007023544A | ||||
| JP2212689A | ||||
| JP2005282070A | ||||
| JP8326459A |
Attorney, Agent or Firm:
Satoshi Suzuki