Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12096723 | Self-opening airtight roof vent system for grain storage devices | Bradley Allan Poppen, Andrew Joseph Sauerbrei | 2024-09-24 |
| 12098020 | Safety grain bin door latch system | Andrew Joseph Sauerbrei, Bradley Allan Poppen, David Jay Brownmiller, John A. Hanig, Steve Sukup | 2024-09-24 |
| 11111074 | Safety grain bin door latch system | Andrew Joseph Sauerbrei, Bradley Allan Poppen, David Jay Brownmiller, John A. Hanig | 2021-09-07 |