Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7578051 | Machine for press fit assembly | John E. Swistak, David J. Ruthven, David P. Deyoung | 2009-08-25 |
| 5452997 | Rotary device with thermally compensated seal | Frederick A. Hekman | 1995-09-26 |
| 5181843 | Internally constrained vane compressor | Frederick A. Hekman | 1993-01-26 |
| 5169298 | Constrained vane compressor with oil skive | Frederick A. Hekman | 1992-12-08 |
| 5161924 | Method and tool for concentric backchamfering on a turning machine | — | 1992-11-10 |