Title:
【発明の名称】アースオーガの駆動方法
Document Type and Number:
Japanese Patent JP3067627
Kind Code:
B2
Inventors:
Ishii Masumi
Seiji Nishio
Seiji Nishio
Application Number:
JP1860496A
Publication Date:
July 17, 2000
Filing Date:
February 05, 1996
Export Citation:
Assignee:
Sanwa Kiko Co., Ltd.
International Classes:
E21B3/02; E21B7/00; (IPC1-7): E21B3/02; E21B7/00
Domestic Patent References:
| JP7208054A | ||||
| JP7269259A | ||||
| JP7115788A | ||||
| JP63224698A |
Attorney, Agent or Firm:
Tadashi Fujikawa