You said<If it indeed was due to non-payment of fees, it may have been done on purpose>

Yes indeed and if that is the case, then I will accept your public apology for your rude reply to my earlier post.

I have always made every effort to post information that is backed by proof sources. Likewise I have tried harder than most to find a reason to like you but I give up.

If the patent has expired for reasons other than non payment of fees, then find it on the USPTO website and post it here please. Then tell PTSC to correct the information on their website.