Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5283999 | Prefabricated panel for building construction | Donald H. Dworkes | 1994-02-08 |
| 5138813 | Building construction method and concrete panel for use therein | Donald H. Dworkes | 1992-08-18 |