Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D501050 | Three way; 2-90° outside, 1-135° inside, bullnose corner | Lewis J. Hein, Derrell J. Weldy | 2005-01-18 |
| D487520 | Three way; 2-90° outside, 1-90° inside, bullnose corner | Lewis J. Hein, Derrell J. Weldy | 2004-03-09 |
| D487156 | Three way; 2-90° inside, 1-135° outside, bullnose corner | Lewis J. Hein, Derrell J. Weldy | 2004-02-24 |
| D486920 | Three way; 1-90° outside, 2-90° inside, bullnose corner | Lewis J. Hein, Derrell J. Weldy | 2004-02-17 |
| 5048247 | Arch corner bead | — | 1991-09-17 |