Title:
二重管スイベル
Document Type and Number:
Japanese Patent JP4016094
Kind Code:
B2
More Like This:
| WO/1999/049177 | ROTATING CONNECTOR WITH COMPENSATING UNIT |
Inventors:
Takeo Hisao
Hiroshi Unjima
Hiroharu Suzuki
Hiroshi Unjima
Hiroharu Suzuki
Application Number:
JP25533398A
Publication Date:
December 05, 2007
Filing Date:
September 09, 1998
Export Citation:
Assignee:
Mining Industry Co., Ltd.
International Classes:
E21B17/05
Domestic Patent References:
| JP6071587U | ||||
| JP5033345A |
Attorney, Agent or Firm:
Kyosei International Patent Office
Eiichi Saito
Eiichi Saito