ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,747,042, issued on Sept. 29.
"Drone" was invented by Andreas Desch (Zell an der Pram, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "A drone including a body and a rotor unit, the body has a substantially cylindrical outer lateral surface, and at least one energy storage element of the drone is arranged in the body. The rotor unit is connected to a head side of the body, and the rotor unit comprises a first rotor with first blades and a second rotor with second blades, wherein the first rotor and the second rotor are arranged coaxially to each other, the first rotor is designed to rotate clockwise about a rotational axis, and the second rotor i...