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Patent US7699082 - Electric multi-pencil sharpener - Google Patents

Patent US7699082 - Electric multi-pencil sharpener - Google Patents

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Patent US3486540 - Electric pencil sharpener - Google Patents
Pencil_sharpener_mechanism – JSTM

Pencil_sharpener_mechanism – JSTM

Mechanism Description: Electric Pencil Sharpener - Wisc-Online OER

Mechanism Description: Electric Pencil Sharpener - Wisc-Online OER

Patent US7472728 - Electrically powered rapid sharpening cosmetic

Patent US7472728 - Electrically powered rapid sharpening cosmetic

ELECTRIC PENCIL SHARPENER WITH A REPLACEABLE CUTTER ASSEMBLY - Patent

ELECTRIC PENCIL SHARPENER WITH A REPLACEABLE CUTTER ASSEMBLY - Patent

Patent US3134365 - Electric pencil sharpener - Google Patents

Patent US3134365 - Electric pencil sharpener - Google Patents

Electronic Pencil Sharpener - Patent application

Electronic Pencil Sharpener - Patent application

Patent US20060086416 - Pencil sharpener - Google Patents

Patent US20060086416 - Pencil sharpener - Google Patents

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