Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4463687 | Powered downdraft gasifier | Stephen J. Mrachek | 1984-08-07 |
| D271228 | Playground climber | Mary H. Abel, Lloyd J. Rubbelke | 1983-11-01 |
| 4343289 | Wood burning stove | — | 1982-08-10 |
| D262399 | Heater front with doors | Mary H. Abel | 1981-12-22 |