1. Diapers

Tired mom and housewife Marion Donovan in 1917, sat at a sewing machine with a shower curtain, and after several attempts to create a waterproof covering for the diaper. Donovan design did not cause diaper rash and stings the baby's skin.
2. Wi-Fi

Hedy Lamarr in 1941, patented a secret means of communication, which dynamically changes the broadcasting frequency to hinder enemy interception. Since 1962, this product was used in the American torpedoes, and is now used in mobile and Wi-Fi.