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:
Nov. 13, 1990
Filed:
Jan. 10, 1990
Applicant:
Inventors:
Kenneth J Schmitt, Spring, TX (US);
Guy E Wilson, Bastrop, TX (US);
Assignee:
Stren Company, Houston, TX (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166228 ; 166236 ;
Abstract
There is disclosed a reciprocating rod type downhole pump for an oil well wherein a filter on the lower end of the barrel of the pump includes a solid body of filtering media having small tortuous passageways connecting its inner and outer sides and decreasing in size from its outer to its inner side.
Quick Actions:
Schmitt, Kenneth. (1990). Reciprocating rod type downhole pump (U.S. Patent No. 4969518). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4969518
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile