1930s "Ohmic" 75w pearl filament lamp

A recent Ebay acquisition, it's always a bit of a gamble bidding on lamps of this age as often they do not have the original lamp inside the box (even if the seller sometimes says so). It was nice to find the original lamp still present. I wonder where the Ohmic plant was located? There seemed to be so many small independent lampmakers (which still surprise me sometimes due to not having heard of them) back up until the 1940s, pretty much all snapped up by the "Lamp Cartel".