He enlisted the help of William Helmore, and they jointly took out patents on the techniques (GB574970 and GB575093).
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However, the early radar-equipped Bristol Blenheims lacked the necessary speed advantage over the German Heinkel 111s and Dornier Do 17 bombers then raiding the UK to be truly effective, the Blenheim being able to find the bomber, but often not being fast enough to be able to reach a position in which to shoot it down.