Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4411355 | Automatic accumulating transfer mechanism | Donald A. Stadler | 1983-10-25 |
| 4364471 | Automatic accumulating lift and carry transfer mechanism | Donald A. Stadler | 1982-12-21 |
| 4294347 | Automatic accumulating lift and carry transfer mechanism | Donald A. Stadler | 1981-10-13 |