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. 03, 1992
Filed:
Mar. 12, 1990
Applicant:
Inventors:
Jeffrey L Wight, Salt Lake City, UT (US);
Lynn W Cook, Fruit Heights, UT (US);
Assignee:
Envirotech Corporation, Salt Lake City, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
CF2 / ;
U.S. Cl.
CPC ...
220217 ; 210608 ; 210D / ;
Abstract
A sludge digester gas-holder is disclosed having a gas-holding cover with ballast members submergible in a liquid medium contained within a chamber circumscribing the upper portion of the tank wall and separate from the main tank cavity.