Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6077473 | Torch cutting enclosure having fume collection provisions | David J. Diederich, John C. Paddock, Earl A. Burkey | 2000-06-20 |
| 6017486 | Comprehensive fume collection system for production of leaded steel | David J. Diederich, John C. Paddock, Donald E. Kocka, Thomas F. Bearding | 2000-01-25 |
| 5993727 | Fume collecting ladle cover | David J. Diederich, John C. Paddock, Kenneth K. Krol | 1999-11-30 |