Mike wrote: >Could you tell us what the title of the patent is - I'd like to look it >up ? Hi Mike, I probably have a copy somewhere in a real safe place. If you have any sort of search capability, the inventor is Edward Sokol. The patent would have issued in the mid 80's, possibly as early as 1984. I'll look to see if I can find the number. The invention, in this case, was a rotating drum with LEDs on the rim. It was intended as a point-of-purchase display. I'm not too sure how broad the claims are and whether they would include Bob Blick's design. I am in occasional contact with Ed Sokol and if I remember I'll ask him the next time he calls. He sold the patent a couple of years ago. I did the electronic package for the original prototype - 1980 or 1981. We did both single and multicolor versions. Fun project. -- Bob Fehrenbach Wauwatosa, WI bfehrenb@execpc.com