i love these chairs. we have them in my shps DCC (damage control central) il see if i can pull a part # off one of them or poke some of the suply fools enought o get a part # or a MFR. there simple enough to make if you have any experence welding and fabercating.
Thanks for the information and pictures everyone! Seems as though there is no-one manufacturer of these seats. I took a picture to my favorite welder and got a quote of $1500 .
Anyway I noticed the picture Christian provided shows a frame made out of painted steel, nicely enameled, hmmm... I can weld one of those up fairly inexpensively.