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. 17, 1999
Filed:
Sep. 05, 1997
Applicant:
Inventors:
Jacques Andre Saint-Pierre, Hanmer, CA;
Everett James Henderson, Whitefish, CA;
Jeffrey Nicholas Repski, Saskatoon, CA;
Guy Chevrette, St-Laurent, CA;
Peter Heinrich Hennecke, Zulpich, DE;
Wilfried Piefenbrink, Erkelenz, DE;
Werner Hensgens, Geilenkirchen, DE;
Assignees:
HDRK Mining Research Limited, Sasakatoon, CA;
WIRTH Maschinen-und Bohrgerate-Fabrik GmbH, Erkelenz, DE;
Primary Examiner:
Int. Cl.
CPC ...
E21D / ; E21C / ;
U.S. Cl.
CPC ...
299-14 ; 299-18 ; 299 61 ;