Title:
穿孔装置
Document Type and Number:
Japanese Patent JP4702655
Kind Code:
B2
Inventors:
Hiromi Kawakami
Namba Makoto
Namba Makoto
Application Number:
JP2000175308A
Publication Date:
June 15, 2011
Filing Date:
June 12, 2000
Export Citation:
Assignee:
Yamamoto Rock Machine Co., Ltd.
International Classes:
E21B7/02; E21B15/00; B28D1/26; E21B19/08
Domestic Patent References:
| JP8260872A | ||||
| JP2000130062A | ||||
| JP7189583A |
Attorney, Agent or Firm:
Sadanobu Shimizu