Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8424267 | Protective assembly for in-wall piping, conduit, and wiring | Thomas J. Kosik, David Duncanson, Otto DeRuntz | 2013-04-23 |
| 7797892 | Kit for plugging a hole with a fire resistant material | Douglas C. Dayton, David Duncanson, Thomas J. Kosik | 2010-09-21 |