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:
Aug. 06, 2002
Filed:
Dec. 19, 2000
Applicant:
Inventor:
William J. Brady, Creve Coeur, MO (US);
Assignee:
The William J. Brady Loving Trust, St. Louis, MO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 2/108 ;
U.S. Cl.
CPC ...
E21B 2/108 ;
Abstract
The invention encompasses improvements in noise attenuation systems for reducing the audible noise level generated during earth boring operations using a hard surfaced rotary drill bit, and in dual bore-cutting elements for performing sequential first and second bore cutting to the design bore-gauge.