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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:
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Assignee:
YOSHIMURA KOGYOSHO KK
International Classes:
E21B49/02; E21B25/16; (IPC1-7): E21B25/16; E21B49/02
Domestic Patent References:
JPS603385A1985-01-09
JPS58168791A1983-10-05
JPS63138095A1988-06-10
JPS6391584U1988-06-14
Attorney, Agent or Firm:
Shogo Ehara



 
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