US Manufacturers by West Virginia
After searching for bicycle manufacturers in West Virginia, there does not appear to be any major professional large-scale bicycle brands manufacturing complete bikes or frames within the state itself. The mountainous terrain and limited population likely discourage major bike production facilities.
However, there could be some small, custom bike builders or specialty shops constructing bespoke bikes on a limited basis within West Virginia that I could not uncover in my initial research. But no sizable or widely-known bike manufacturers seem to call the state home currently.