Title:
【発明の名称】穴掘装置を装備する作業車
Document Type and Number:
Japanese Patent JP3015335
Kind Code:
B2
Inventors:
Yasufumi Hamanaka
Application Number:
JP9277898A
Publication Date:
March 06, 2000
Filing Date:
March 20, 1998
Export Citation:
Assignee:
Hamanaka Electric Works Co., Ltd.
International Classes:
E21B7/00; B66C23/36; E04H12/34; E21B7/02; E21B15/00; (IPC1-7): E21B7/00; E21B15/00
Domestic Patent References:
| JP9125850A | ||||
| JP33667Y2 |
Attorney, Agent or Firm:
Yasuhiro Toyosu