Title:
【発明の名称】単孔変動水圧式透水試験装置及び試験方法
Document Type and Number:
Japanese Patent JP2796748
Kind Code:
B2
Inventors:
OOI YUKIO
OOTSUKA YASUNORI
TAKAHASHI AKINORI
ITO KAZUMASA
OOTSUKA YASUNORI
TAKAHASHI AKINORI
ITO KAZUMASA
Application Number:
JP30122789A
Publication Date:
September 10, 1998
Filing Date:
November 20, 1989
Export Citation:
Assignee:
OYO CHISHITSU KK
International Classes:
E21B49/00; E02D1/00; E21B33/12; G01L27/00; G01N15/08; (IPC1-7): E02D1/00; E21B33/12; G01L27/00
Domestic Patent References:
| JP355310A |
Attorney, Agent or Firm:
Shigemi