Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11104297 | Systems and methods for multi-keyholder digital lockout | David P. Gengler, Sean Louis Calkins, Kenneth Richard Goldthorpe | 2021-08-31 |
| 11098500 | Lockout management systems and methods with multi-keyholder electronic locking devices | David P. Gengler, Sean Louis Calkins, Kenneth Richard Goldthorpe | 2021-08-24 |