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The ornamental design for an air purifier, as shown and described.
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FIG. 1 is a perspective view of an air purifier showing my new design;
FIG. 2 is another perspective view of an air purifier;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a left side elevational view thereof;
FIG. 6 is a right side elevational view thereof;
FIG. 7 is a top plan view thereof; and,
FIG. 8 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jun 15 2001 | HUANG, PING | HUNG HSING ELECTRIC CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 011942 | /0607 | |
Jun 26 2001 | Hung Hsing Electric Co., Ltd. | (assignment on the face of the patent) | / |
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