Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9931693 | Filtering check valve for metal casting | Lee Horvath, Ronald C. Aufderheide, Sam N. Ramrattan | 2018-04-03 |
| D772312 | Breaker core | Steven Johnston, Thomas Brandt | 2016-11-22 |
| 8426493 | Foundry mixes containing sulfate and/or nitrate salts and their uses | Ralph E. Showman | 2013-04-23 |