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.
Mettler Toledo
Allen DeVilbiss, Jr. (1873-1911) was an inventor who lived in Toledo, Ohio, USA. He became interested in the concept of weighing machines and conceived the idea of an automatic computing pendulum scale. He was able to prove his concept with a local butcher, who realized that customers appreciated the automatic computation which eliminated the risk of overcharging. While his invention gained in popularity, DeVilbiss was not interested in making it a viable business.