Many companies at that time were making plate cameras, and the designs were very similar to the point that it's hard to distinguish one from the other.
Sometimes, under the focusing rail there is a small plate with the manufacturer's name.
There were only a few shutter makers, which sold their product to everyone. Same goes with Carl Zeiss Jena, which sold its Tessar to many camera makers.
I'll be interested in learning which camera this is.