Velcro
Swiss electrical engineer George de Mestral invented his first touch fastener when, in 1941, he went for a walk in the woods and wondered why Burdock seeds clung to his coat and dog. He discovered it could be turned into something useful. He patented it in 1955 and subsequently refined and developed its practical manufacture until its commercial introduction in the late 1950s.
László Bíró
László József Bíró () or Ladislao José Biro (born as László József Schweiger, 29 September 1899 – 24 October 1985) was a Hungarian-Argentine inventor, who patented the first commercially successful modern ballpoint pen. The first ball point pen was invented roughly fifty years earlier by John J. Loud but it did not attain commercial success.