ALEXANDRIA, Va., July 16 -- United States Patent no. 12,667,745, issued on June 30.
"House fire fighting technique" was invented by Peter Aung Hla (Washington) and Myint Myint San (Washington).
According to the abstract* released by the U.S. Patent & Trademark Office: "This patent is about fighting house/apartment/condo/building fires by using dry ice and/or carbon dioxide gas. By the time people call the authorities, the fire has grown so big that it is difficult to control or to extinguish by ordinary fire fighting techniques. Traditional house fire fighting is to spray water into the house so that the flames would disappear and stop burning. This patent involves two methods: 1) throwing, spraying or spreading powder or flakes or pellet...