Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6141921 | Weather barrier for windows and doors | Peter Leeuwenburgh | 2000-11-07 |
| 5937596 | Weather barrier for windows and doors | Peter Leeuwenburgh | 1999-08-17 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6141921 | Weather barrier for windows and doors | Peter Leeuwenburgh | 2000-11-07 |
| 5937596 | Weather barrier for windows and doors | Peter Leeuwenburgh | 1999-08-17 |