The ones I'm familiar with predate AGDs and Tippmans. You think I happen to know the Patent numbers of all 3 off the top of my head? Get real.
Read my previous post as to whether or not I care to look them up for you.
While your there re-reading that post, look for the part that states whether it makes any difference in Alphas arguement anyway. And don't forget the part where I state my need to prove anything on the subject.
Thanks.