You might want to try contacting Ultimate Pedals. They are one of the new vendors. They posted a pic of the logo from their CAD/CAM software in another thread. I dont know if they will give it to you, but its worth a shot
I have the artwork in a few different formats. Part of the 3D artwork I generated for the screen savers. In fact, I also have a nice Derlin plate, about 10" long, of the "Z" logo machined from a ProE version of the file, part of a project of my own! Alas, my primary computer is down and I'm not sure how long it's going to take me to get it up and running again, so I can't get at the files right now... If you're still looking late next week, send me a PM and I'll see what I can do.