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.
Coes Wrench Company
It was while they were living and working in Springfield that Loring Coes invented the screw wrench commonly known as the monkey wrench. Prior to the invention of the screw wrench, the two common wrenches of the time, the English patent wrench and the Merrisk wrench (also known as the Springfield wrench), needed two hands to adjust, whereas the new screw wrench could be used and adjusted with one hand.