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 Bullock (inventor)
William Bullock (1813 – April 12, 1867) was an American inventor whose 1863 improvements to Richard March Hoe's rotary printing press helped revolutionize the printing industry due to its great speed and efficiency. A few years after his invention, Bullock was accidentally killed by his own web rotary press.