ALEXANDRIA, Va., April 2 -- United States Patent no. 12,262,667, issued on April 1, was assigned to NETLED TECHNOLOGY OY (Tampere, Finland).

"Arrangement for growing plants on multilayer principle" was invented by Niko-Matti Kivioja (Siivikkala, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and a system for growing plants on multilayer principle in mobile gutter farming is described, whereby, in the process of growing plants planted in cultivation gutters, said plants are conveyed in cultivation layers present on top of each other in a cultivation space in a longitudinal direction of the cultivation space in one or opposite directions. The cultivation gutters and the plants contained therei...