ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,543, issued on May 12, was assigned to R.M.R.H. TROP'S SYSTEM INNOVATION GMBH (Ettringen, Germany).

"Roll-off container, system with at least two roll-off containers, an equipment trolley system and use of a roll-off container" was invented by Heinz Werner Kleine-Natrop (Ettringen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A roll-off container, a system consisting of at least two roll-off containers, an equipment trolley system and the use of a roll-off container are described. The roll-off container comprises a main frame arranged on a platform. The platform comprises attachment rollers on its bottom side and an upward-pointing hook wit...