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The ornamental design for a letter opener, as shown and described. |
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FIG. 1 is a side elevational view of a letter opener showing my new design;
FIG. 2 is a front elevational view thereof;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a top plan view thereof; and
FIG. 5 is a bottom plan view thereof.
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| D797273, | Mar 15 2013 | Illinois Tool Works Inc. | Air filtration device filter pin |
| D852005, | Oct 09 2017 | RAIL HOLDINGS, LLC | Knife |
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
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