ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,149, issued on March 25, was assigned to AIRBUS HELICOPTERS (Marignane, France).

"Method for testing a hybrid drive system on an aircraft, associated computer program and aircraft" was invented by Marc Gazzino (Marseilles, France), Guillaume Dumur (Salon de Provence, France), Jean-Francois Logeais (Marseilles, France), Leonard Boudier (Saint-Chamas, France), Michel Jamot (Aix en Provence, France), Mikael Henaff (Aix en Provence, France) and Jeremy Camus (Ensues la Redonne, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for testing a hybrid power plant equipping a rotary-wing aircraft comprising at least one lift rotor, the hybrid po...