Title:
【発明の名称】さく孔装置用検出装置
Document Type and Number:
Japanese Patent JP2812788
Kind Code:
B2
Inventors:
Kazuyuki Ota
Tsutomu Kaneko
Tsutomu Kaneko
Application Number:
JP19013190A
Publication Date:
October 22, 1998
Filing Date:
July 18, 1990
Export Citation:
Assignee:
Furukawa Metal Co., Ltd.
International Classes:
E21B7/02; E21B15/00; E21B19/08; G01B7/00; (IPC1-7): E21C11/00
Attorney, Agent or Firm:
Tetsuya Mori (3 others)