ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,421, issued on March 17.
"Manual paint application system" was invented by Ricardo Verdu Alvaro (Valencia, Spain).
According to the abstract* released by the U.S. Patent & Trademark Office: "A manual painting device (brush/roller) allows surfaces to be coated continuously without the brush or roller having to be dipped manually in order to be loaded with paint. The kit can be mounted on a trolley/structure for transport or can be used in a backpack with a tank connected to a pump and from which the paint flows automatically, conveyed through a hose to the applicator element (brush/roller), such that the applicator element is loaded automatically from inside the painting accessor...