Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6343453 | Composite wooden beam and method for producing said beam | — | 2002-02-05 |
| 5901524 | Grid-like building panel framework and members for making such panel framework | — | 1999-05-11 |
| 5617700 | Prefabricated building panel | Sidney K. Tissington | 1997-04-08 |
| 5293659 | Automatic swimming pool cleaner | Dieter J. Rief, Herman E. Frentzel, Paul Sebor | 1994-03-15 |