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Patent US3134365 - Electric pencil sharpener - Google Patents
Patent EP2078617B1 - Safety device for an electric pencil sharpener

Patent EP2078617B1 - Safety device for an electric pencil sharpener

Patent US8205649 - Cutter assembly and electric pencil sharpener

Patent US8205649 - Cutter assembly and electric pencil sharpener

Patent US20060086416 - Pencil sharpener - Google Patents

Patent US20060086416 - Pencil sharpener - Google Patents

Patent US20070251105 - Electric pencil sharpener - Google Patents

Patent US20070251105 - Electric pencil sharpener - Google Patents

Electric Pencil Sharpener

Electric Pencil Sharpener

Manual and Electric Pencil Sharpeners: A Guide - Jackson's Art Blog

Manual and Electric Pencil Sharpeners: A Guide - Jackson's Art Blog

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