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The ornamental design for a letter tray riser, as shown and described. |
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FIG. 1 is a top, left front perspective view of a letter tray riser showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view of a second embodiment of my new design;
FIG. 5 is a right side elevational view of FIG. 1 the left side being a mirror image thereof;
FIG. 6 is a rear elevational view of FIG. 1;
FIG. 7 is a top, left front perspective view of a third embodiment of my new design; and,
FIG. 8 is a top, left front perspective view of FIG. 4.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 18 1990 | BREEN, JOHN D | RUBBERMAID INCORPORATED, | ASSIGNMENT OF ASSIGNORS INTEREST | 005378 | /0037 | |
| Jul 09 1990 | Rubbermaid Incorporated | (assignment on the face of the patent) | / |
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