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:
Sep. 20, 1994
Filed:
Feb. 01, 1993
Applicant:
Inventor:
Bryan R Benson, North Branch, MN (US);
Assignee:
Cherne Industries Incorporated, Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166 92 ; 166 93 ; 166 97 ;
Abstract
A well monitor plug device for sealing a subwell casing. The plug device has an adjustable and tamper resistant sealing structure which includes a turning member and a cooperating locking member which permits access to a sampling aperture.