ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,746,502, issued on Sept. 29, was assigned to Work Air Technologies Pty Ltd (Wangara, Australia).

"Air conditioning and filtration system" was invented by Gregory Brian Knowles (Wangara, Australia).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air conditioning and filtration system (10) comprising a pre-treatment system (12) for initially filtering air drawn from an external environment; pressurisation means (50) for positively pressurising air filtered by the pre-treatment system (12) and at least one circulation means (106). Each circulation means (106) draws air from the external environment through the pre-treatment system (12) and pressurisation...