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The ornamental design for filter apparatus, as shown and described.
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FIG. 1 is a perspective view of a first embodiment of a filter apparatus, according to the present invention;
FIG. 2 is a side elevational view of the filter apparatus of FIG. 1; the opposite side elevational view being identical thereto;
FIG. 3 is a bottom plan view of the filter apparatus of FIG. 1;
FIG. 4 is a top plan view of the filter apparatus of FIG. 1;
FIG. 5 is an end elevational view of the filter apparatus of FIG. 1; the opposite end elevational view being identical thereto;
FIG. 6 is a perspective view of a second embodiment of a filter apparatus, according to the present invention;
FIG. 7 is an end elevational view of the filter apparatus of FIG. 6; the opposite end elevational view being identical thereto; and,
FIG. 8 is a bottom plan view of the filter apparatus of FIG. 6.
The top plan view is identical in appearance to the filter apparatus of FIG. 4.
The side elevational view is identical in appearance to the filter apparatus of FIG. 2.
The sole difference between the two embodiments resides in the appearance of a notch at the top and in the second embodiment. The broken line showing of environmental structure is for illustrative purposes only and forms no part of the claimed design.
Gillingham, Gary, Engelland, Randy
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 01 1999 | Donaldson Company, Inc. | (assignment on the face of the patent) | / | |||
| Feb 07 2000 | GILLINGHAM, GARY | Donaldson Company, Inc | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 010620 | /0669 | |
| Feb 07 2000 | ENGELLAND, RANDY | Donaldson Company, Inc | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 010620 | /0669 |
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