ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,053, issued on Sept. 9, was assigned to AirFlow Direction Inc. (Amesbury, Mass.).
"Interchangeable directional differential pressure detector" was invented by Brian M. Wiseman (Amesbury, Mass.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A system for mounting a differential pressure indication device for indicating a presence of a directional differential pressure between a first space and a second space separated from the first space by a barrier is provided. The system may include a base configured to be mounted against the barrier, where the base includes a receptacle configured to removably receive the pressure indication device. The system m...