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The ornamental design for a portable air treatment device, as shown and described. |
FIG. 1 is a perspective view of a portable air treatment device showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a front elevational view thereof, the rear elevational view being identical; and
FIG. 4 is a right side elevational view thereof, the left side elevational view being identical; and,
FIG. 5 is a perspective view of a portable air treatment device showing a second embodiment of my new design. The sole difference from the first embodiment resides in the appearance of the water bottles.
The bottom view of the portable air treatment device is not part of the design sought to be patented and is therefore not shown.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 30 1997 | GILBERTSON, MARK A | Bemis Manufacturing Company | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008546 | /0270 | |
May 02 1997 | Bemis Manufacturing Company | (assignment on the face of the patent) | / | |||
Mar 02 2004 | Bemis Manufacturing Company | Essick Air Products | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 015083 | /0830 |
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