Title:
【考案の名称】逆打装置
Document Type and Number:
Japanese Patent JPH063907
Kind Code:
Y2
Inventors:
Akinori Ohta
Application Number:
JP3783588U
Publication Date:
February 02, 1994
Filing Date:
March 23, 1988
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
B25D17/00; E21B1/00; E21B1/26; E21B3/00; (IPC1-7): E21C3/20; B25D17/00
Domestic Patent References:
| JP6195885A |
Attorney, Agent or Firm:
Tetsuya Mori (2 others)
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