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The ornamental design for a portable head rest, as shown and described. |
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FIG. 1 is a side-elevational view of a portable _head rest showing my new design;
FIG. 2 is a front-elevational view thereof; and
FIG. 3 is a bottom view thereof.
| Patent | Priority | Assignee | Title |
| D333396, | Mar 06 1990 | Head rest | |
| D747238, | Oct 31 2012 | Roger Thomas Mascull and Elizabeth Jocelyn Mascull as Trustees of the RT and EJ Mascull Family Trust | Headrest |
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| 2997264, | |||
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| 4143792, | Sep 09 1977 | Display Corporation International | Automobile windshield washing service unit |
| 229132, | |||
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