Assignee
Inventors
- Johannes Petrus Marinus Plug (10 patents)
- Leonardus Jacobus Johannus Welzen (5 patents)
- Fanciscus Gerardus Henricus Van Duijnhoven (1 patents)
- Josephina Johanna Maria Gerarda Swagten (1 patents)
US Patent 9406826 · Granted Aug 2, 2016