Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D402314 | Pencil sharpener | Vito Niosi | 1998-12-08 |
| D399134 | Package for paint | — | 1998-10-06 |
| 5676240 | Caddy for art supplies | David A. Cziraky, Richard A. Tarozzi | 1997-10-14 |
| D374349 | Caddy for art supplies | David A. Cziraky, Richard A. Tarozzi | 1996-10-08 |
| D353840 | Writing instrument container for display stand | Charles W. Dietterich | 1994-12-27 |
| D315446 | Marker case | Charles W. Dietterich, Richard E. Kenepaske, Gregory C. Yehl | 1991-03-19 |
| 4991299 | Universal crayon sharpener | Charles W. Dietterich, Gregory C. Yehl | 1991-02-12 |
| 4969766 | Cap for marking instruments | George J. Nagle, Charles W. Dietterich | 1990-11-13 |