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| Number | Title | Issue Date |
| 7507043 | Ergonomic keyboard An ergonomic keyboard having a mount and a plurality of keys arranged in a plurality of unbroken adjacent rows is provided. Each row is comprised of an arcuate portion, a left portion, and a right portion. The left and right portions extend tangentially from the lef... | 03/24/2009 |
| 6840690 | Ergonomic keyboard An ergonomic keyboard having a mount and a plurality of keys arranged in a plurality of unbroken adjacent rows is provided. Each row is comprised of an arcuate portion, a left portion, and a right portion. The left and right portions extend tangentially from the lef... | 01/11/2005 |
| 6467979 | Ergonomic keyboard An ergonomic keyboard having a mount and a plurality of keys arranged in a plurality of unbroken adjacent rows is provided. Each row is comprised of an arcuate portion, a left portion, and a right portion. The left and right portions extend tangentially f... | 10/22/2002 |
| 6443643 | Ergonomic keyboard An ergonomic keyboard having a mount and a plurality of keys arranged in a plurality of unbroken adjacent rows is provided. Each row is comprised of an arcuate portion, a left portion, and a right portion. The left and right portions extend tangentially f... | 09/03/2002 |
| 5360280 | Ergonomic keyboard including arcuate elongated keys An ergonomic keyboard having a mount and a plurality of keys arranged in a plurality of unbroken adjacent rows is provided. Each row is comprised of an arcuate portion, a left portion, and a right portion. The left and right portions extend tangentially f... | 11/01/1994 |
