For $7.00 I got seven vise grip type pliers at auction. I only wanted two, the rest appeared to be junk. Several had been used in welding and I threw these in a pile for a friend. Another one without a name I also put in that pile. Before I took them to him I noticed something on the lever of the one without a name. So I cleaned it and found a patent number, 1,489,458 which is a Peterson, Dewhitt Ne patent. It turns out to be his second patent, April 8, 1924. Here is the plier. The only markings are Dewhitt Neb. and the patent number on the bottom of the lever.