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.
Circumcision surgical procedure
The Gomco clamp was invented by Dr. Hiram S. Yellen and Aaron A. Goldstein in 1935. Yellen, an obstetrician-gynecologist in Buffalo, New York sought an improved method of newborn circumcision. Goldstein was a prolific local inventor and manufacturer. Gomco stands for the "GOldstein Medical COmpany", the original manufacturer of the instrument. The patent was in the name of Aaron Goldstein (U.S. Patent 119180, issued February 27, 1940). The instrument was a rapid success and was widely marketed and sold in the US and Canada. It is currently manufactured and marketed worldwide.