Title:
POSITIONAL RELATIONSHIP CONFIRMING DEVICE OF SAMPLING GROUND AND SAMPLE IN CORE TUBE SAMPLER
Document Type and Number:
Japanese Patent JPS63114797
Kind Code:
A
Inventors:
YOSHIMURA NOBUO
Application Number:
JP26155586A
Publication Date:
May 19, 1988
Filing Date:
October 31, 1986
Export Citation:
Assignee:
YOSHIMURA KOGYOSHO KK
International Classes:
E21B49/02; E21B25/16; (IPC1-7): E21B25/16; E21B49/02
Domestic Patent References:
JPS603385A | 1985-01-09 | |||
JPS58168791A | 1983-10-05 | |||
JPS63138095A | 1988-06-10 | |||
JPS6391584U | 1988-06-14 |
Attorney, Agent or Firm:
Shogo Ehara