Assignee
Inventors
- Bastiaan Lambertus Wilhelmus Marinus Van De Ven (23 patents)
- Antonius Franciscus Johannes De Groot (29 patents)
- Christiaan Alexander Hoogendam (192 patents)
- Erik Roelof Loopstra (328 patents)
- Hans Butler (152 patents)
US Patent 9753381 · Granted Sep 5, 2017