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The ornamental design for a rotational exerciser, as shown and described. |
FIG. 1 is a front elevational view of a rotational exerciser showing my new design;
FIG. 2 is a bottom plan view thereof; and
FIG. 3 is a side elevational view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 21 1980 | Human Performance Systems, Inc. | (assignment on the face of the patent) | / | |||
Mar 09 1981 | BELL DONALD L | HUMAN PERFORMANCE SYSTEMS, INC , A CORP OF AR | ASSIGNMENT OF ASSIGNORS INTEREST | 003831 | /0373 |
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