On this date, Rebecca 'Becky' Schroeder, at the age of 12, was granted U.S. Patent 3,832,556 for her invention of a luminescent backing sheet designed for writing in the dark, commonly known as the 'Glo-Sheet.' This marked a significant achievement, making her one of the youngest females to receive a U.S. patent. Her invention found applications in various fields, including healthcare, maritime operations, and photography, where writing in low-light conditions was necessary.