Yeah, almost 100% sure that would be a Trek unless some Chinese OEM slipped out of the factory.
It was a partnership with Dahon - I forget if Dahon actually built them, or just licensed the technology.
There were several models, the top of the line was the F600.. you don't have that one.
I would bet on an F400. I think there was also an F200 and maybe an F100... unsure.
There was a dealer in my city who carried them for a bit, but iirc they were quite a bit heavier than the equivalent Dahon's and priced rather high. Still a very nice find!