ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,414,496, issued on Sept. 16, was assigned to DEERE & COMPANY (Moline, Ill.).

"Calibration device for volumetric meters" was invented by Ean M. Bush (Davenport, Iowa) and Andrew W. Harmon (Geneseo, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems, methods, and apparatuses for calibrating a first meter of an air cart include determining a calibration factor using a second meter. The second meter may be located with the air cart or remotely from the air cart. An amount of material dispensed from the second meter is used to determine the calibration factor. A number of cycles of operation of the second meter may also be used to determine the cal...