I am the inventor of the Laser Arbor patent #US5862727. You can view it on the USPTO site. I wrote by (certified mail) to Ryobi and Sears as far back as the mid to late 90's asking if they were intersted. One response told me to contact them when I had recieved my patent. Well I did but they apparently were not interested. Now Sears has come out with the Laser Trac which is what my patent is for. Since I am just a little guy I do not have the money to fight them. Does anybody have any advice?