Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5526921 | Intersecting bi-directional buckets for a bucket elevator system | Harold E. Patterson, Paul I. Sleppy | 1996-06-18 |
| D336091 | Material transport bucket | Harold E. Patterson, Paul I. Sleppy | 1993-06-01 |