Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7819140 | Internal diameter coatings for fire protection piping | Patrick J. Bass, Bruce E. Laumann, Stephen T. Norvilas, Kenneth J. Spellman, Richard W. Maunz | 2010-10-26 |
| 6758282 | Fire protection pipe and methods of manufacture | David S. Pliner, Manzoor Chaudhry, Stephen T. Norvilas, Elmer H. Foster | 2004-07-06 |