Syracuse resident Joseph Burns is credited with inventing the serrated knife in 1919. The inspiration came to him while using a scallop-edged glass-cutting tool, a design he thought might prove useful for cutting bread.
Joseph Burns Invented Serrated Knife
https://americanprofile.com/articles/joseph-burns-invented-serrated-knife/By American Profile on April 27, 2003
Found in: Trivia