Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8746118 | Chain link sharpening method and apparatus | Mike Goettel, Michael J. Patterson | 2014-06-10 |
| 7891279 | Shear resistant rivet and saw chain | David Scott Penrose, Michael Goettel | 2011-02-22 |
| 7563064 | Shear resistant rivet and saw chain | David Scott Penrose | 2009-07-21 |
| 7293491 | Low vibration saw chain | Mike Harfst, Arlan Way, George Carruthers, deceased | 2007-11-13 |