Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5140461 | Adjustable viewing screen housing and display device | Wallace A. Krapf | 1992-08-18 |
| 5060448 | Composite lightweight beam for a freestanding display or the like | Wallace A. Krapf, Daniel W. Rossborough, Jr. | 1991-10-29 |
| 4938367 | Weldment-free document holder | Wallace A. Krapf, Daniel W. Rossborough, Jr. | 1990-07-03 |