Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D892183 | Step drill bit | Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill | 2020-08-04 |
| D881241 | Step drill bit | Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill | 2020-04-14 |
| D872783 | Step drill bit | Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill | 2020-01-14 |