The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 23, 1990
Filed:
May. 27, 1987
Applicant:
Inventors:
Martin E Cobern, Cheshire, CT (US);
Richard D DiPersio, Meriden, CT (US);
Edmund M Hamlin, Tehachapi, CA (US);
Assignee:
Alcan International Limited, Montreal, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
33304 ;
Abstract
A method and apparatus is presented for measuring the azimuth angle of a borehole being drilled, the data for determining the azimuth angle being obtained while the drillstring is rotating.
Cobern, Martin. (1990). Method and apparatus for measurement of azimuth of a borehole while (U.S. Patent No. 4894923). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4894923
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile