Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5673521 | Rolled roof vent and method of making same | Michael S. Coulton, Geoffrey N. Ehrman, William F. Horvath, Kenneth L. Laubsch | 1997-10-07 |
| 5669192 | Cladding for door and window frames | Joseph Opdyke, Kenneth L. Laubsch | 1997-09-23 |