Some googling suggests it was not a patent they claimed, but that it was an "illegal number". Very possible I confused the two. https://en.wikipedia.org/wiki/I

Some googling suggests it was not a patent they claimed, but that it was an "illegal number". Very possible I confused the two. https://en.wikipedia.org/wiki/Illegal_number https://en.wikipedia.org/wiki/Illegal_number I think at the time what I found ridiculous was that you were prohibited from "having" the number, but of course nobody could say what number it was you weren't allowed to have... seemed like something that belonged in Dr. Strangelove.