Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D476483 | School supply box | Mark A. Gilbertson, Steven H. Demsien, David C. Harris | 2003-07-01 |
| D447633 | School supply box | Steven H. Demsien, David C. Harris, Mark A. Gilbertson | 2001-09-11 |
| D427428 | Facing for a supply box | Steven H. Demsien | 2000-07-04 |
| D411040 | School supply box | Mark A. Gilbertson, Steven H. Demsien, David C. Harris | 1999-06-15 |