Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5884880 | Flex arm linkage assembly | — | 1999-03-23 |
| 5267778 | Position control for a dental chair | Paul B. Krebs, El Don L. Hoven | 1993-12-07 |
| 5236244 | Service mechanism for a dental chair | — | 1993-08-17 |
| 5190349 | Dental chair | George K. Austin, Jr., El Don L. Hoven, Tony J. Tewell, Shawn R. Irwin, Paul B. Krebs | 1993-03-02 |
| 5176423 | Apparatus for securing an instrument holder to a dental chair | George K. Austin, Jr. | 1993-01-05 |
| 4503936 | Hydraulic hose mounting arrangement for high-visibility mast assembly | — | 1985-03-12 |