ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,557,727, issued on Feb. 24, was assigned to Bourgault Industries Ltd. (St. Brieux, Canada).
"Apparatus for adjusting seed and fertilizer depths" was invented by Mark Cresswell (St. Brieux, Canada) and Devin Lung (St. Brieux, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A seeding apparatus includes a trailing arm pivotally attached to an implement frame and a bias element exerting a downward bias force on the trailing arm. Fertilizer and seed furrow openers are attached to the trailing arm such that a seed furrow has a seed furrow depth less than a fertilizer furrow depth of a fertilizer furrow. A packer wheel is rotatably attached to a rear end...