The electron beam of the National Bureau of Standards betatron has been removed by the use of a pulsed magnetic extractor. The electrons were spiraled outward into the extractor that had created a sharp step magnetic field canceling the betatron guiding field for 19° of azimuth. This step magnetic field was produced by a current pulse flowing in an array of parallel wires. The removed beam was well focused. Initial testing up to 24 Mev showed that about 60 percent of the accelerated electrons were extracted in the beam.