Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7988107 | Stemware holder for an automatic dishwasher | Kevin B. Miller, John I. Smith, Sandra C. Steward | 2011-08-02 |
| 7219389 | Nozzle assembly housing for vacuum cleaner | Eric E. Muhlenkamp | 2007-05-22 |
| 7185394 | Dirt cup assembly with attachable and detachable external filter holder | Joel Erik Hitzelberger, Alan T. Pullins | 2007-03-06 |
| 7181804 | Removable dirt cup assembly with external filter | Joel Erik Hitzelberger, Mark J. Medley, Nathan A. Gogel, Alan T. Pullins | 2007-02-27 |
| 7152275 | Dirt container for cyclonic vacuum cleaner | J. Hitzelberger, Amy N. Mudd | 2006-12-26 |
| 6807708 | Upright vacuum cleaner with dual hoses and hose ports | Jeffrey T. Roney | 2004-10-26 |