Title:
【発明の名称】衝撃工具のロツド引抜き用逆衝撃装置
Document Type and Number:
Japanese Patent JPH089943
Kind Code:
B2
Inventors:
Masami Mori
Application Number:
JP1933685A
Publication Date:
January 31, 1996
Filing Date:
February 05, 1985
Export Citation:
Assignee:
Tokyo Ryuki Manufacturing Co., Ltd.
International Classes:
E21B1/26; E21B1/00; (IPC1-7): E21C3/20
Domestic Patent References:
| JP5854197A | ||||
| JP57114888U | ||||
| JP58134483U | ||||
| JP4536564B1 |
Attorney, Agent or Firm:
Warren G. Simor
Next Patent: 竪孔用水中掘削機の排泥管着脱装置