ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,471,746, issued on Nov. 18, was assigned to Wessel-Werk GmbH (Reichshof-Wildbergerhuette, Germany).
"Vacuum cleaner nozzle" was invented by Marcus Cleff (Cologne, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A vacuum cleaner nozzle includes a housing with, formed on an underside of the housing and extending in a transverse direction, a suction orifice that is bounded by what in a working direction aligned perpendicular to the transverse direction is a front suction-orifice edge and by what in the working direction is a rear suction-orifice edge, with a suction duct disposed in the housing and adjoining the suction orifice, with a suction port ...