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.
William Leggo
William Augustus Leggo (25 January 1830 at the City of Quebec – 21 July 1915 at Lachute, Quebec) was a Canadian inventor, engraver and businessperson. He is noted for co-inventing the half-tone engraver with George-Édouard Desbarats. He had several patents to his name, including leggotyping and granulated photography.