Title:
Method and apparatus for measuring rock bit wear while drilling
United States Patent 3345867


Inventors:
Arps, Jan J.
Application Number:
US39412564A
Publication Date:
10/10/1967
Filing Date:
09/03/1964
Assignee:
ARPS CORP
Primary Class:
Other Classes:
73/152.58, 175/39
International Classes:
E21B12/02
View Patent Images:
US Patent References:
3020753Dynamometer1962-02-13
2924432Earth borehole logging system1960-02-09
2810546Drill tool telemetering systems1957-10-22