Claims (1)
Claim 1 (Independent)
The ornamental design for a knife sharpener as shown and described.
Full Description
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The file of this patent contains at least one drawing/photograph executed in color. Copies of this patent with color drawing(s)/photograph(s) will be provided by the Office upon request and payment of the necessary fee.
1. Knife sharpener
1 . 1 : Perspective
1 . 2 : Front
1 . 3 : Back
1 . 4 : Left
1 . 5 : Right
1 . 6 : Top
1 . 7 : Bottom
The characteristic features of the design lie in the shape as shown.
Citations
This patent cites (17)
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