Not sure if they are in business or not but an established brand that seems to have disappeared is "Pro-Togs" cycling clothing. I still have a couple of their jerseys and a pair of tights - all 100% wool and very comfortable - even after 30 years. I guess when everything switched to technical clothing they didn't keep up? Other brands that used to be common and now probably occupy more of a niche market - Detto Pietro shoes, Sugino bottom brackets and cranks and Avocet (mentioned above). Still have a beautiful set of Avocet hubs (I think somewhere in the basement) that I used on my first set of training clinchers so my good tubular wheels with Campy Nuevo Record hubs wouldn't have too much use. And does Simplex still make shifters and derailleurs?