Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6540027 | Farrier's tool | David Litzen, Ronald L. Bedard, John L. Schneller | 2003-04-01 |
| 4763455 | Interior corner drywall bead | — | 1988-08-16 |
| 4646498 | Curtain wall panel and method | Donald A. Kossuth, J. Stephen Robinson | 1987-03-03 |
| 4624087 | Drywall exterior corner bead | — | 1986-11-25 |
| 4590733 | Curtain wall panel and method | Donald A. Kossuth, J. Stephen Robinson | 1986-05-27 |
| 4584224 | Tapered edge board | — | 1986-04-22 |
| 4578915 | Exterior wall | — | 1986-04-01 |
| 4566241 | Progressive demountable partition | — | 1986-01-28 |