Inventor: Geerlings Lommerse, Petronella Maria
Inventor: de Jong, Jacobus Robertus
Inventor: de Jong, Jacobus Robertus
Inventor: Snodgrass, Edmund C., Saul, Robert Mark
Inventor: Klemm, Nils, Glawe, Martin
Inventor: Hanes, Mitchell E.
Inventor: Klemm, Nils, Glawe, Martin
Inventor: Barends, Eveline