Title:
【発明の名称】二重管ロッドハンドリング装置
Document Type and Number:
Japanese Patent JP2835551
Kind Code:
B2
Inventors:
SATO TADASHI
Application Number:
JP9347092A
Publication Date:
December 14, 1998
Filing Date:
March 18, 1992
Export Citation:
Assignee:
KOKEN KOGYO KK
International Classes:
E21B19/14; E21B19/08; E21B19/086; E21D9/06; (IPC1-7): E21B19/14; E21D9/06
Domestic Patent References:
| JP3275895A | ||||
| JP431593A | ||||
| JP5149080A | ||||
| JP62125197U |
Attorney, Agent or Firm:
Masami Hattori (2 outside)