The "biro" or ballpoint pen was invented by a Hungarian, Sir Biro László József, born in Budapest. Biro was born into a Jewish family. His father, Mozes Matthias Schweiger, in accordance with the policy of Magyarization, after the birth of his son, changed his surname to Biro. Deciding to become a successor to the dynasty of dentists, he entered the medical institute. Then he went to work at an oil company and became interested in car racing. He developed an automatic transmission and sold a patent for it to General Motors. Biro's former home under 24 Nagymező Street now houses the Thália Theatre.
Source: https://www.trippy.com/facts/Budapest Photo: Készítette: Ato 01 - A feltöltő saját munkája, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=28853790