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The ornamental design for an air filtration apparatus, as shown and described. |
FIG. 1 is a top front perspective view of the air filtration apparatus, showing my new design;
FIG. 2 is a right side elevation view;
FIG. 3 is a front elevation view;
FIG. 4 is a left side elevation view;
FIG. 5 is a rear elevation view;
FIG. 6 is a top plan view; and,
FIG. 7 is a bottom plan view.
The surface shading on the illustrative air filtration apparatus is intended only to show the character and contour of the surfaces and not surface indicia.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 28 1998 | HOSHINO, KIYOSHI | Emerson Electric Co | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009510 | /0494 | |
Oct 02 1998 | Emerson Electric Co. | (assignment on the face of the patent) | / |
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