Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5107640 | Modular accessible areaway system | James A. Gefroh | 1992-04-28 |
| 4876833 | Accessible areaway system | James A. Gefroh | 1989-10-31 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5107640 | Modular accessible areaway system | James A. Gefroh | 1992-04-28 |
| 4876833 | Accessible areaway system | James A. Gefroh | 1989-10-31 |