| CPC A47J 43/0722 (2013.01) | 18 Claims |

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1. A blade assembly comprising:
a top blade;
a middle blade positioned below the top blade; and
a bottom blade positioned below the middle blade, the bottom blade comprising:
a flat base portion; and
first and second wing portions extending downwardly and outwardly from the base portion, wherein the first and second wing portions each include:
a leading edge and a trailing edge, wherein the leading edge includes an angled sharpened portion,
a proximal segment, wherein the proximal segment is bent at a first angle within a first range of 50 degrees to 80 degrees relative to a horizontal longitudinal axis of the blade assembly, and
a distal segment, wherein the distal segment is bent at a second angle within a second range of 15 degrees to 45 degrees relative to the horizontal longitudinal axis of the blade assembly.
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