Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6840011 | Window panel balance apparatus and method | Roy A. Thompson, Douglas W. Kroncke, John C. Costello, David Chastain, Jack D. Gundlach +8 more | 2005-01-11 |
| 5737877 | Block and tackle balance with integral, non-rotating pulley system | Scott Meunier, Rick Skallerud, Gary Newman | 1998-04-14 |