Issued Patents 2020
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D892183 | Step drill bit | Brett A. Parendo, David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson | 2020-08-04 |
| 10695845 | Step drill bit | Douglas W. Allen, Courtney McCool, Smith C. Theiler | 2020-06-30 |
| 10618119 | Cutting tool | Douglas W. Allen, Jeffrey M. Zeiler, David B. Griep, Mark Willer | 2020-04-14 |
| D881241 | Step drill bit | Brett A. Parendo, David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson | 2020-04-14 |
| D872783 | Step drill bit | Brett A. Parendo, David Hlavac, Alexander R. Greenhill, Ingolfur Ludviksson | 2020-01-14 |