Assignee
Inventors
- Johannes Petrus Jozef Beerepoot (3 patents)
- Johannes Jozias Blom (5 patents)
- Feike De Jong (15 patents)
- Unknown
- Willem Sjardijn (19 patents)
- Virgilius Christiaan Johannes Nicolaas Van Liempd (4 patents)
- Paulus Egidius Raas (3 patents)