Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11691203 | Step drill bit | Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Max R. Sawa +1 more | 2023-07-04 |
| 11273501 | Step drill bit | Brett A. Parendo, Richard Hohnl, Jr., David Hlavac, Alexander R. Greenhill, Max R. Sawa +1 more | 2022-03-15 |
| 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 |