Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5672021 | Fibrous nib for use in a capillary feed marker | Herman Abber, Lee A. Carlson, Craig L. Donaldson | 1997-09-30 |
| 5174814 | Retractable marker pen and inks therefor | Ann P. Burwell, Richard Grandoff | 1992-12-29 |
| 4650360 | Antistatic marking | Warren R. Pitts, Steven M. Levin | 1987-03-17 |
| 4497275 | Ink stamp pad and reservoir | Lee A. Carlson, David M. Lunt | 1985-02-05 |
| 4392425 | Retractable ink stamp | John P. Capezzuto | 1983-07-12 |