ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,448,767, issued on Oct. 21, was assigned to EVAC OY (Espoo, Finland).

"Buffer box of a vacuum drainage system" was invented by Timothy W. Monson (Winnebago, Ill.) and Matthew A. Wales (Beloit, Wis.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a buffer box of a vacuum drainage system, which vacuum drainage system comprises the buffer box, which buffer box comprises as an outer frame structure side walls, end walls, a top wall and a bottom wall and which buffer box further comprises at least one inlet and an outlet, a vacuum drainage piping, at least one collection branch connected to the vacuum drainage system and to the outlet...