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:
Dec. 21, 2021
Filed:
Oct. 24, 2019
Applicant:
Tracto-technik Gmbh & Co. KG, Lennestadt, DE;
Inventor:
Wolfgang Schmidt, Kirchhundem, DE;
Assignee:
TRACTO-TECHNIK GMBH & CO. KG, Lennestadt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/00 (2006.01); E21B 1/00 (2006.01); E21B 12/02 (2006.01); E21B 47/00 (2012.01);
U.S. Cl.
CPC ...
E21B 12/02 (2013.01); E21B 1/00 (2013.01); E21B 17/006 (2013.01); E21B 47/00 (2013.01);
Abstract
A drill string section of a drill string for drilling in the ground having arranged on the outside of the drill string section at least one marking by means of which abrasion can be recognized.