I wonder if there are any patents on dev hardware flying around? Tried having a quick look but didnt find..
Patents are for new ideas and technologies, not every single device out there. I doubt any development hardware would have any development oriented technology worthy of patent. Nintendo did patent that consumer SNES game studio thing however since it was a creative idea, and Bung did patent some stupid technologies used in their products but I don't think you'll find anything more than that. Did you search through all the patents by companies known to make dev hardware?
not dev hardware, but guys, take a look at this! 0_o http://www.google.com/patents?id=wdQQAAAAEBAJ&dq=nintendo+add-on+cd they had weird ideas about the N64 i guess... anybody heard about this before?
Heh, well yes I think it resembles what was meant to be (dont know if they exist) a "hotel-custom" unit of the N64. Basically, its a common N64 with a expansion unit comprising a hard disk, a modem dsp and a rfu.