Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8021085 | Engraving tool with a very strong cutter tip to reduce breakage | — | 2011-09-20 |
| 8011648 | Clamp for holding work-pieces of any size upon a pallet support table | — | 2011-09-06 |
| 7607871 | Spring loaded tool with floating depth control for countersinking holes or engraving | — | 2009-10-27 |
| 7237390 | Compact portable beverage cooling system | — | 2007-07-03 |
| 7093368 | Engraving tool depth control nosepiece for enhancing line uniformity | — | 2006-08-22 |
| 6834434 | Spring-loaded engraving toolholder | — | 2004-12-28 |
| 6259972 | Method for processing and disseminating utility outage information | Zarko Sumic, David Drake Callahan | 2001-07-10 |