Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D426044 | Drum | Harley L. Cramer | 2000-05-30 |
| D395118 | Drum combined with a cover | Harley L. Cramer, Stephen E. Kipp, Gary J. Toska | 1998-06-09 |
| 5573118 | Nestable open head drum | Harley L. Cramer, Stephen E. Kipp, Gary J. Toska | 1996-11-12 |
| 5402909 | Drum for storing and dispensing liquids | Harley L. Cramer | 1995-04-04 |