Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660509 | Key duplicating machine with bottom clearance | Stephan W. Cole, Ronald B. Berringer, Hugh F. Groth, Eric R. Hammonds, Michael Koubek +4 more | 1997-08-26 |
| 5538374 | Key duplicating machine and method | Stephan W. Cole, Eric R. Hammonds, Anthony Nicholas, Richard W. Ryai, Sr., Samuel J. Zelenak +1 more | 1996-07-23 |