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. 10, 1993
Filed:
Nov. 25, 1991
Applicant:
Inventor:
Richard Rosenberg, Bronxville, NY (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A01K / ;
U.S. Cl.
CPC ...
210151 ; 210169 ; 2104162 ; 119 26 ; 119261 ;
Abstract
An undergravel wet/dry trickle system utilizing mechanical, biological and chemical filtration is described. This system provides the advantage of compact size coupled with efficient purification and saturation level oxygenation of the water returned to the aquarium. Moreover, this invention relies on a simple manufacture which is less costly than any wet/dry trickle system previously known.