Erfindung Patentieren (updated 2025-03-13)
Duration: 50:06
200.6K views | Jun 4, 2019
200.6K views | Jun 4, 2019
Duration: 6:55
1.4M views | Dec 14, 2017
1.4M views | Dec 14, 2017
Duration: 17:06
38.6K views | Apr 25, 2021
38.6K views | Apr 25, 2021