Charles Kaman has his company, Kaman Aircraft, in Bloomfield, Connecticut USA. He developed the "syncromeshing" helicopter back in the 1940s which required no tail rotor. Called the "Husky" It was a popular helicopter used in fire suppression and as an air ambulance. Kaman also pioneered the very first radio controlled helicopter.
Today they make components, still make the "K-Max" single place lifting helicopter, as well as some parts for the space program. They also developed and made Ovation Guitars which were recently sold to Fender.
Hope that helps!
Rome