Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4824368 | Oral hygiene appliances | — | 1989-04-25 |
| 4416628 | Push-button switch as used in oral hygiene appliance | Michael A. Cammack, Christopher W. Elkins, Keith M. Mullins | 1983-11-22 |
| 4337040 | Oral hygiene appliances | Michael A. Cammack, Christopher W. Elkins, Keith M. Mullins | 1982-06-29 |
| 4302186 | Oral hygiene appliances | Michael A. Cammack, Christopher W. Elkins | 1981-11-24 |
| 4229634 | Insulated switch arrangement for electric motor | Donald W. Ruehmann, Christopher W. Elkins | 1980-10-21 |