Title:
立坑掘削機
Document Type and Number:
Japanese Patent JP3568708
Kind Code:
B2
Inventors:
Kazunori Ueda
Kiyoshi Tsuchiya
Kiyoshi Tsuchiya
Application Number:
JP27490296A
Publication Date:
September 22, 2004
Filing Date:
October 17, 1996
Export Citation:
Assignee:
Hitachi Construction Machinery Co., Ltd.
International Classes:
E21B3/02; E21D1/06; (IPC1-7): E21D1/06; E21B3/02
Domestic Patent References:
| JP4062291A | ||||
| JP53036685B2 | ||||
| JP63046545Y2 | ||||
| JP6002476A | ||||
| JP53030642B2 |
Attorney, Agent or Firm:
Kasuga Toshiaki