This collector who put this info up on provide-net is fairly knowledgeable but there are some big mistakes in his articles. The most obvious one is that Gibson PAFs used stainless steel or brass covers. These were NEVER used and no valid reason for ever having been used, especially BRASS. Brass kills tone quicker than you can blink and Seth Lover knew this. This guy doesn't have the knowledge that pickup makers have; I tried to correspond with him once and he wasn't very friendly at all. I'm sure if any other pickup makers here want to pipe in, especially Nugget, they can point out other mistakes in the information. I guess some valid info is better than none. Lindy Fralin has a two part article on the web which is much more accurate. As I said before don't believe everything you read just because its on the web.
Here's Lindy's info:
http://www.flyingvintage.com/gcmag/PAF.html
http://www.flyingvintage.com/gcmag/PAF2.html