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:
Mar. 08, 2011
Filed:
Oct. 18, 2005
Applicant:
Tom Unsgaard, Stavanger, NO;
Inventor:
Tom Unsgaard, Stavanger, NO;
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 31/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A well pump device is introduced into a well and connects to a wireline to receive electrical energy from the surface. An electrically driven feed pump connects to and delivers driving fluid to the driving side of an ejector. A hydraulic apparatus uses the well pump device as a pulling tool.