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| Number | Title | Issue Date |
| 6637481 | Apparatus for sharpening a writing instrument An apparatus for sharpening a writing instrument, e.g. an electric pencil sharpener, is disclosed as including a body for receiving a pencil for sharpening, and a base, the base having a bottom surface to support the apparatus on a surface, and the body m... | 10/28/2003 |
| 4676028 | Honing tool A honing tool for sharpening an end of an electrode to be employed in the fusion splicing of optical fibres includes a rotatably mounted honing wheel of frusto-conical shape and a rotatably mounted bush whose axis is parallel to that of the honing wheel a... | 06/30/1987 |
| 3973604 | Single cutter pencil sharpener A pencil sharpener has a housing, a single cutter mounted for rotation in the housing, and a fixed pencil guide mounted in the housing and having an opening facing the cutter to expose the end of a pencil to the cutter. A rotatably mounted tube coaxial wi... | 08/10/1976 |
