Inventor: Noodelijk, Robert
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beers, Catharina Maria
Inventor: Beekenkamp, Annie Cornelia
Inventor: Noodelijk, Robert
Inventor: Beekenkamp, Annie Cornelia
Inventor: Beekenkamp, Annie Cornelia
Inventor: Roethling, Jon L.
Inventor: Beers, Martinus Petrus
Inventor: Beers, Martinus Petrus
Inventor: Berry, James Bryan
Inventor: Unger, Michael H.
Inventor: Unger, Michael H.
Inventor: Moolenaar, Alfred Nicol
Inventor: William Flemer, III