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How It Works - Rare 1963 Sun-Star Musical Pencil Sharpener Model E-1 @JimmiePorterAtStuartArts - YouTube
PENCIL SHARPENER, metal, "Jupiter 1", Guhl & Harbeck, Hamburg, 1905-1910. Miscellaneous - Technica & Nautica - Auctionet
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Essington N. Gilfillan is listed as an assignor on this 1910 patent of a pencil sharpening blade. | Pencil sharpener, Automatic pencil, Pencil sharpeners
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