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Patent US20060086416 - Pencil sharpener - Google Patents

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Patent EP2559564A1 - Electric pencil sharpener - Google Patents

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Patent US20060086416 - Pencil sharpener - Google Patents

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Patent US8205649 - Cutter assembly and electric pencil sharpener
Patent US8205649 - Cutter assembly and electric pencil sharpener

Electric Pencil Sharpener Diagram
Electric Pencil Sharpener Diagram

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Staples 34462 Electric Pencil Sharpener Gears Replacement - iFixit

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Patent US20120233867 - Pencil sharpener with two blades - Google Patents

Patent US20070251105 - Electric pencil sharpener - Google Patents
Patent US20070251105 - Electric pencil sharpener - Google Patents

Patent EP1650049A2 - Pencil sharpener - Google Patents
Patent EP1650049A2 - Pencil sharpener - Google Patents