Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7410672 | Water-resistant porcelain enamel coatings and method of manufacturing same | Ray O. Knoeppel, Glenn Pfendt | 2008-08-12 |
| 6303183 | Anti-microbial porcelain enamel coating | Michael Wilczynski, Glenn Pfendt | 2001-10-16 |
| 4591689 | Adaptive welding guidance apparatus | Ronald D. Brown | 1986-05-27 |