I recently came across a old stove out of a rent house I purchased. The only markings that are visible are (ROBERTSHAW),on the oven knob.I belive the stove is from the 30's or 40's. My question is Robertshaw the name of the stove or just the name of the knobs. The stove just has a really neat look to it. I would appreciate any advice on how to find out information on this stove.