Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6830159 | File cabinet container | Robert Caldwell, Charles B. Carter, Gardner Klaasen | 2004-12-14 |
| 6588865 | Carrousel file cabinet | Robert Caldwell, Charles B. Carter, Gardner Klaasen, David Swenson | 2003-07-08 |
| 6419332 | File cabinet | Robert Caldwell, Charles B. Carter, Gardner Klaasen | 2002-07-16 |