Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12385271 | Underwater cleaner | Benjamin Fränkel, Constantin Fränkel | 2025-08-12 |
| 11697480 | Propeller arrangement | Benjamin Fränkel, Constantin Fränkel | 2023-07-11 |
| 10184259 | Underwater cleaner | — | 2019-01-22 |