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The ornamental design for a sign support frame, as shown and described.
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FIG. 1 is a perspective view of a sign support frame of my new design;
FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image thereof;
FIG. 3 is a top plan view thereof;
FIG. 4 is a bottom plan view thereof;
FIG. 5 is a side elevational view thereof, the opposite side elevational view being a mirror image thereof;
FIG. 6 is a sectional view taken along line 6--6 of FIG. 3; and,
FIG. 7 is an enlarged foreshortened sectional view taken along line 7--7 of FIG. 5.
| Patent | Priority | Assignee | Title |
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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