ALEXANDRIA, Va., July 9 -- United States Patent no. 12,352,458, issued on July 8.

"Simple airflow measurement method" was invented by Robert J. Mowris (Olympic Valley, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method of measuring a Heating, Ventilating Air Conditioning (HVAC) system airflow across an evaporator coil or heat exchanger comprising drilling a single hole in a near side of a plenum, a duct, or a box and inserting an anemometer probe in the single hole, and taking at least one airflow measurement selected from the group consisting of: a near side airflow, a centerline airflow, and a far side airflow. Calculating an average HVAC system airflow based on the at least one airflow measure...