Patents per Year
Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 7267616 | Method for making a ball-nut and method for making a ball-screw | Ronald Smith, Kathleen Murphy, David Drennen, Patrick A. Mescher, Thomas Bucholz | 2007-09-11 | |
| 6813970 | Ball-nut assembly and method for making | David Drennen | 2004-11-09 | $2,931,000 |
| 6668551 | Actuator having common bearing | John Benjamin Hageman, Paul Rymoff, Ernst Baumgartner, Harald Klode | 2003-12-30 | $1,675,000 |
| 6626270 | Caliper with internal motor | David Drennen, Gary C. Fulks, Douglas E. Poole | 2003-09-30 | $2,874,000 |
| 6367593 | Electric caliper having splined ball screw | David Drennen | 2002-04-09 | $3,524,000 |
| 5655396 | Roll peening device | — | 1997-08-12 |