Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4589332 | Flashing system for a grain drying bin | Donald B. Brockhaus, Calvin L. Fuehrer, Walter E. Swartz | 1986-05-20 |
| 4587893 | Grain drying bin | Donald B. Brockhaus, Calvin L. Fuehrer, Walter E. Swartz | 1986-05-13 |
| 4426937 | Heat exchanger furnace | Steven C. Stockdale, Elmer G. Stockdale | 1984-01-24 |
| 4424041 | Trolling drive means for boats | Leonard J. Lukehart, Dale E. Locker | 1984-01-03 |
| 4367689 | Water recreational vehicle | Leonard J. Lukehart | 1983-01-11 |
| 4319557 | Heat exchanger furnace | Steven C. Stockdale, Elmer G. Stockdale | 1982-03-16 |