ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,522, issued on July 8, was assigned to Crosman Corp. (Bloomfield, N.Y.).

"Air gun with mixed gas charge" was invented by Jeffrey D. Hansen (Honeoye Falls, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air gun includes a first reservoir storing a first compressed gas, e.g., compressed air, and a second reservoir storing a second compressed gas different from the first compressed gas, e.g., helium. A mixed gas system mixes a supply of the first compressed gas and a supply of the second compressed gas as a gaseous mixture. A firing valve is selectively actuated to release the gaseous mixture to a barrel of the air gun, to fire the air gun."

Th...