Portable head rest

The ornamental design for a portable head rest, as shown and described.

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

Patent	Priority	Assignee	Title
2997264,
3729227,
4143792,	Sep 09 1977	Display Corporation International	Automobile windshield washing service unit
229132,
235823,
236775,
239899,

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