Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5600358 | Ink pen having a hydrophobic barrier for controlling ink leakage | Marc A. Baldwin, Lawrence Plotkin | 1997-02-04 |
| 5526030 | Pressure control apparatus for an ink pen | Marc A. Baldwin, Mark McCarty, Lowell R. McDaniel, John M. Altendorf, Joseph R. Elliot +1 more | 1996-06-11 |