Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7503687 | Machine for mixing a frozen dessert | Duane H. Heinhold, Don H. Savage | 2009-03-17 |
| D373951 | Plastic bag for frozen food storage | Duane H. Heinhold, Don H. Savage | 1996-09-24 |
| 5067819 | Cleaning and sanitizing system for frozen dessert mixing machine | Duane H. Heinhold | 1991-11-26 |
| 4974965 | Frozen dessert mixing machine | Duane H. Heinhold | 1990-12-04 |