Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12365109 | Saw chain link with one or more oversized rivet holes | Michael D. Harfst | 2025-07-22 |
| 11273573 | Saw chain link with one or more oversized rivet holes | Michael D. Harfst | 2022-03-15 |
| 11247363 | Saw chain presets | Michael D. Harfst, Evan Pickett, James Matthew Cunnington | 2022-02-15 |
| 10406715 | Tie rivet for saw chain | Michael D. Harfst | 2019-09-10 |
| 10195759 | Tie strap with hardened integrated rivet for a saw chain | Michael D. Harfst | 2019-02-05 |
| 9757808 | Formed wire tie strap with integrated rivet for a saw chain | Michael D. Harfst | 2017-09-12 |
| 9192997 | Bar mounted sharpener | Ian Osborne | 2015-11-24 |
| 9038519 | Apparatus, method, and system for orienting a saw chain link on a sprocket | Mike Goettel, Michael D. Harfst | 2015-05-26 |
| 8932114 | Chain link sharpening method and apparatus | Lance Luedtke | 2015-01-13 |
| D663598 | Sharpening arm | Lance Luedtke | 2012-07-17 |
| D663602 | Saw chain sharpening stone and holder | — | 2012-07-17 |
| 8136436 | Saw chain link with offset footprint | Ian Osborne, Mike Harfst | 2012-03-20 |
| D648200 | Stone holder | Lance Luedtke | 2011-11-08 |
| 7891925 | Shear resistant rivet and saw chain | David Scott Penrose, Mike Goettel | 2011-02-22 |
| 6976299 | Stump treatment guide bar | — | 2005-12-20 |
| 6643933 | Guide bar for chain saw including stump treatment | — | 2003-11-11 |
| 6148547 | Chain saw guide bar for tree harvester | Duane M. Gibson | 2000-11-21 |
| 6061915 | Tightening mechanism for chain saw guide bar | Kent L. Huntington, Mark D. Lamey | 2000-05-16 |
| 5987786 | Guide bar mount for a tree harvester | Duane M. Gibson | 1999-11-23 |
| 5143131 | Selectable spray pattern chain saw bar system | Robin A. Plumbley | 1992-09-01 |
| 5093998 | Repairable guide bar for tree harvesters | Gerald A. Locker | 1992-03-10 |
| 5056224 | Tree harvester guide bar | — | 1991-10-15 |
| 5052109 | Repairable guide bar for tree harvesters | James L. Vanderzanden | 1991-10-01 |