Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10470635 | Urban or industrial aspirator | Damien Bertrand, Christian Lange, Jean-Benoît Langouche | 2019-11-12 |
| 10213083 | Urban or industrial vacuum cleaner | Jean-Benoît Langouche, Christian Lange | 2019-02-26 |