Assignee
Inventors
- Leonardus Johannes Hubertus Erkens (9 patents)
- Gregor Schmitt (4 patents)
- Hendrikus Maria Anna Hamers (3 patents)
- Johannes Maria Martinus Luijten (3 patents)
- Jozef Gertruda Emanuel Mains (3 patents)
- Helena Francisca Maria Schulpen-Vleugels (1 patents)