Zeus comes to mind as a blatant Campagnolo copy out of Spain that sold some but pretty much failed. Weyless was huge in the 70's but for sure faded away, as did Cool Gear. I would have put Hi-E in the same bunch but someone told me they are still going, so I don't know.

Oh, plus Excel components. Big initial push but then no follow through. They may have been early 80's though. Shimano should also get credit (or not) for Bio-Pace along these same lines. And remember Miche hubs? Is Avocet still alive? What about Ofmega? Others may occur to me, but those are the first off the top.

Rick / OCRR