ALEXANDRIA, Va., May 12 -- United States Patent no. 12,623,098, issued on May 12, was assigned to MSA Technology LLC (Cranberry Township, Pa.).

"Dual mode breathing apparatus" was invented by Nicholas R. Neugebauer (Sewickley, Pa.), Michael Laskowski (Pittsburgh) and Marco Tekelenburg (Zelienople, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A breathing apparatus includes a tank containing pressurized breathing gas, a regulator having an inlet connected to the tank, an outlet for providing breathing gas to a user, and a valve configured for controlling a flow of breathing gas between the inlet and the outlet. A facepiece includes a first port for connecting with the outlet of the regulator, a second po...