ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,359, issued on June 30, was assigned to Hallett's Hay and Seed Ltd. (Carstairs, Canada).

"Flow measuring and metering apparatus for flowable granular solids" was invented by Richard Hallett (Carstairs, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A volumetric flow measuring and metering apparatus for flowable solids has an upright flow passage through which a flow of bulk material can pass. A speed sensor measures a speed of the flow. An actuator controls an obturating device operative relative to a bottom end of the flow passage. A controller receiving speed data from the speed sensor operates the actuator at least in part based on informa...