Apparatus, kits, and methods for sharpening electric shavers having rotary and reciprocating-type cutting members are disclosed. A sharpening apparatus in accordance with an exemplary embodiment of the present invention may include an applicator tray or other applicator means, and an abrasive material...http://www.google.se/patents/US7686675?utm_source=gb-gplus-sharePatent US7686675 - Blade sharpening for electric shavers
