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The ornamental design for an aquarium filter, as shown. |
FIG. 1 is a perspective view of an aquarium filter showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a right side elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is an exploded perspective view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Aug 10 1988 | WILLINGER, ALLAN H | WILLINGER BROS, INC , WRIGHT WAY, OAKLAND, NJ 07436 | ASSIGNMENT OF ASSIGNORS INTEREST | 004937 | /0276 | |
Aug 15 1988 | Willinger Bros., Inc. | (assignment on the face of the patent) | / | |||
Dec 17 2002 | WILLINGER BROS INC | ROYAL BANK OF SCOTLAND PLC , FRANKFURT BRANCH, AS ADMINISTRATIVE AGENT | SECURITY AGREEEMENT | 013887 | /0143 | |
Dec 17 2002 | WILLINGER BROS , INC | ROYAL BANK OF SCOTLAND PLC, FRANKFURT BRANCH, AS ADMINISTRATIVE AGENT, THE | SECURITY INTEREST SEE DOCUMENT FOR DETAILS | 014090 | /0876 | |
Sep 08 2004 | Royal Bank of Scotland PLC | WILLINGER BROS, INC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015302 | /0516 |
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