Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D801875 | Bicycle frame | Michael W. Pfeiffer, Daniel D. Dittmer | 2017-11-07 |
| D798197 | Bicycle derailleur hanger extension | Marc L. Basiliere | 2017-09-26 |
| 8499649 | Testing a torque tool | Michael W. Pfeiffer | 2013-08-06 |
| 7969689 | Spacer keys with pivoting supports | Jeffery B. Carlson | 2011-06-28 |