ALEXANDRIA, Va., July 21 -- United States Patent no. 12,686,168, issued on July 21, was assigned to Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO ('s-Gravenhage, Netherlands).

"Print head module and printer" was invented by Andries Rijfers (Kamerik, Netherlands), Leonardus Antonius Maria Brouwers (Beesel, Netherlands), Godefridus Hendrikus Willebrordus Verhoeven (Eindhoven, Netherlands) and Marcus Benedictus Hoppenbrouwers (Eindhoven, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "An extrusion printer including a print head module is described. The print head module is arranged for cooperating with at least one further print head module in a stackable arrangement to ...