Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10193588 | Head protection device, communication unit, connection unit and system comprising head protection device, communication unit and connection unit | Achim Volmer, Jan Schöning | 2019-01-29 |
| 9543774 | Supply circuit in a communication system of a protective headgear, protective headgear with such a supply circuit and method for operating such a supply circuit | Achim Volmer, Erik Deier | 2017-01-10 |