Aquarium filter cartridge

- Willinger Brothers, Inc.
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Description

FIG. 1 is a front perspective view of an aquarium filter cartridge showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a left side elevational view thereof;

FIG. 6 is a bottom plan view thereof.

Referenced Cited
U.S. Patent Documents
203110 April 1878 Brach
D291721 September 1, 1987 Willinger
3525435 August 1970 Conner, Jr.
4448686 May 15, 1984 Friedman
4714547 December 22, 1987 Willinger
Patent History
Patent number: D307626
Type: Grant
Filed: Oct 30, 1987
Date of Patent: May 1, 1990
Assignee: Willinger Brothers, Inc. (Oakland, NJ)
Inventor: Allan Willinger (Oakland, NJ)
Primary Examiner: Susan J. Lucas
Assistant Examiner: M. H. Tung
Law Firm: Helfgott & Karas
Application Number: 7/116,263
Classifications
Current U.S. Class: Immersion Type (e.g., Aquarium Filter, Etc.) (D23/210)