Title:
【考案の名称】管の穿孔片保持機能を備えたホールソー
Document Type and Number:
Japanese Patent JP2524645
Kind Code:
Y2
Inventors:
Onoe Akitaka
Toshiharu Sakai
Yoshiaki Minamide
Toshiharu Sakai
Yoshiaki Minamide
Application Number:
JP11927289U
Publication Date:
February 05, 1997
Filing Date:
October 12, 1989
Export Citation:
Assignee:
OSAKA GAS CO.,LTD.
Nippon Steel Pipe Co., Ltd.
Nippon Steel Pipe Co., Ltd.
International Classes:
B23B51/04; (IPC1-7): B23B51/04
Domestic Patent References:
| JP6341412U | ||||
| JP57122310U | ||||
| JP6236567Y2 |
Attorney, Agent or Firm:
Koichi Suzue (1 person outside)