Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10926577 | Electric graver, system and method for jewelers | David Johnson | 2021-02-23 |
| 9079286 | Pneumatic actuator for impact engraving tool | — | 2015-07-14 |
| 8479372 | Ring engraving fixture | David B. Lark, David W. Skrzypczak | 2013-07-09 |