ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,384,192, issued on Aug. 12, was assigned to Montblanc-Simplo GmbH (Germany).
"Filling system for a fountain pen" was invented by Thilo Wagner (Hamburg, Germany) and Jorg Dickopp (Hamburg, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A filling system for a fountain pen includes a pump unit, an air channel connected to the pump unit and to a first connection for connecting to the fountain pen, and an ink channel separate from the air channel and having an immersion end for immersing in ink and which is connected to a second connection for connecting to the fountain pen. The pump unit is designed to introduce a specified air volume into the air c...