Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D362573 | Top for furniture | John P. VanKammen, David C. Walsweer | 1995-09-26 |
| 5451101 | Wire management system | Samuel J. Ellison, John P. VanKammen, Daniel Grabowski | 1995-09-19 |