Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5779559 | Golf club with improved grip | — | 1998-07-14 |
| 4862662 | Ceiling having enhanced resistance to fire | Karl L. Bickel, David Bruce Brakeman | 1989-09-05 |
| 4727700 | Ceiling or wall having improved fire resistance and method of installing the same | — | 1988-03-01 |
| 4630424 | Top hung truss | Karl L. Bickel, John M. Denny | 1986-12-23 |
| 4594900 | Axial load testing machine | Roy F. Pellerin, William L. Galligan | 1986-06-17 |
| 4479342 | Post frame building and method of constructing the same | — | 1984-10-30 |
| 4456497 | Wood I-beam and method of fabricating the same | — | 1984-06-26 |