Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303732 | Toothbrush | — | 1989-10-03 |
| 4845839 | Method of making a resistive element | — | 1989-07-11 |
| 4827769 | Fuel level sensor with buried conductor | Richard E. Riley | 1989-05-09 |
| 4819284 | Inflatable crib | — | 1989-04-11 |