Yep, the Gateway is probably a re-branded Northgate/whatever. Yours is identical to this one, save for the 25 PF-Key "angled" flight deck, correct? :?:
My KeyCap pullers were gimme's from Northgate's booth at the NYC PC Expo the year they introduced that monster. They OEM'd it for several PC makers. I had one, but it disappeared with most of my KBD collection in the Storage Room Disaster.