Title:
クローズドサンプラー
Document Type and Number:
Japanese Patent JP4478351
Kind Code:
B2
Inventors:
Koji Mishima
Application Number:
JP2001083529A
Publication Date:
June 09, 2010
Filing Date:
March 22, 2001
Export Citation:
Assignee:
Toa Tone Bowling Co., Ltd.
International Classes:
E21B25/00; E21B25/06
Domestic Patent References:
| JP44017831Y1 | ||||
| JP10159477A | ||||
| JP11006380A | ||||
| JP8074489A |
Attorney, Agent or Firm:
Yoshikazu Ishii