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The ornamental design for an aquarium filter, substantially as shown and described. |
FIG. 1 is a perspective view of an aquarium filter, showing my new design;
FIG. 2 is a top plan view;
FIG. 3 is a left rear elevational view, the right rear being a mirror image thereof;
FIG. 4 is an elevational view taken from the left front and left rear thereof;
FIG. 5 is a left front elevational view, the right front being a mirror image thereof;
FIG. 6 is an elevational view taken from left front and right front thereof; and
FIG. 7 is a bottom plan view.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Dec 06 1976 | Willinger Bros., Inc. | (assignment on the face of the patent) | / | |||
Apr 28 1977 | WILLINGER, ALLAN H | WILLINGER BROS , INC WRIGHT WAY | CORRECTIVE ASSIGNMENTS | 006676 | /0057 |
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