Assignee
Inventors
- Johannes Petrus Wilhelmus van Beers (1 patents)
- Henricus Hubertus van den Berg (6 patents)
- Richard Morren (3 patents)
- Joannes Theodorus van der Heiden (2 patents)
- Evert-Jan Pol (15 patents)
US Patent 10871517 · Granted Dec 22, 2020