A microwave heating device for heating a material in a heating room by microwave radiation produced by a microwave oscillator. The heating device includes an outer waveguide for channeling the microwave radiation from the microwave oscillator into the heating room. The outer waveguide is connected at...http://www.google.com.au/patents/US4629849?utm_source=gb-gplus-sharePatent US4629849 - Microwave heating device having a rotary reflector means in a heating chamber
