Title:
掘削装置のリーダー鉛直調整機構
Document Type and Number:
Japanese Patent JP4844934
Kind Code:
B2
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Inventors:
Yutaka Ishikawa
Ryozo Higashi
Atsushi Kimura
Ryozo Higashi
Atsushi Kimura
Application Number:
JP2008063994A
Publication Date:
December 28, 2011
Filing Date:
March 13, 2008
Export Citation:
Assignee:
Onoda Chemiko Co., Ltd.
Mining Industry Co., Ltd.
Mining Industry Co., Ltd.
International Classes:
E21B15/00
Domestic Patent References:
| JP2004270304A | ||||
| JP2000064206A | ||||
| JP54003307A | ||||
| JP2005053394A | ||||
| JP2005036520A | ||||
| JP11013061A |
Attorney, Agent or Firm:
Kyosei International Patent Office