Title:
改良型ダブルコアチューブ・サンプラー
Document Type and Number:
Japanese Patent JP4611112
Kind Code:
B2
Inventors:
Takayuki Hosono
Seino Shigeyuki
Masataka Kobayashi
Seino Shigeyuki
Masataka Kobayashi
Application Number:
JP2005149119A
Publication Date:
January 12, 2011
Filing Date:
May 23, 2005
Export Citation:
Assignee:
Co., Ltd. AC drilling industry
Seino Shigeyuki
Masataka Kobayashi
Seino Shigeyuki
Masataka Kobayashi
International Classes:
E21B25/00; E02D1/04; E21B10/48; E21B25/10
Domestic Patent References:
| JP2005113383A | ||||
| JP4112982U | ||||
| JP55026365A | ||||
| JP62088938U |
Attorney, Agent or Firm:
Seiji Sugiyama