The Novax patent ([url="http://www.google.com/patents?id=yektAAAAEBAJ&pg=PA2&dq=4,852,450&source=gbs_selected_pages&cad=3#v=onepage&q&f=false"]here[/url]) only covers one method of laying out the frets, using lines coming from a single point. There are simpler ways of doing it (mark the fretspaces on the longest and shortest strings then join them), while the concept of fanned frets per se has been around since the Renaissance ([url="http://en.wikipedia.org/wiki/Orpharion"]link[/url]).
Wow, that was some serious procrastination when I have lots of things needing doing that are actually important