Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9033488 | Easy load printer media spindle | Douglas J. Sproal | 2015-05-19 |
| 8471878 | Sign maker templates for producing centered labels and methods of use | George Francis Unger, IV, Douglas J. Sproal | 2013-06-25 |