According to Wikipedia, rotor cyphers were probably invented in the Netherlands, not the US. It says an american tried to commercialize the idea, but went bust.

According to Wikipedia, rotor cyphers were probably invented in the Netherlands, not the US. It says an american tried to commercialize the idea, but went bust. The only patents they mention were issued to Europeans. They don't seem to mention these spiffy US and UK rotor cyphers; any pointers?