And in a bit of an ironic twist, modified Type-X machines were used to decode intercepted German Enigma messages once Bletchley Park had solved the settings for a particular day. From what I can remember from various books, the German Enigmas were modified in several ways from the original commercial version that Scherbius patented. So you could argue that both Type-X and the German military Enigmas were different development branches based on the same original idea.