Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9790734 | Interior reinforcing structure for a door and method of installing an interior reinforcing structure in a door | Philip E. Brumbaugh | 2017-10-17 |
| 5167105 | Hollow door construction using an improved void filler | Michael A. Isban | 1992-12-01 |