Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8684101 | Frangible shape memory alloy fire sprinkler valve actuator | Alfred David Johnson, Valery Martynov | 2014-04-01 |
| 8584767 | Sprinkler valve with active actuation | Alfred David Johnson, Valery Martynov | 2013-11-19 |