By Sabine Siebold ANKARA, July 7 (Reuters) - The U.S. is in talks with Germany and other European nations about establishing co-production of Raytheon's AIM-120 AMRAAM missiles and a maintenance facility for Lockheed's PAC-3 Patriot missiles in Europe, a source told Reuters. If implemented, both projects could free up capacity at Raytheon and Lockheed Martin factories in the United States and enable the U.S. defence giants to ramp up production at home.