Extremely Rare Antique Lee De Forest 1st Electronic Medical Device

Description

Extremely Rare Antique Lee De Forest 1st Electronic Medical Device. I have not been able to find another one like this. I was able to find one similar but it was newer. This medical device used the same patent numbers for the tubes that he used to create the first wireless radio transmission. I believe this was made some time between 1925 and 1935. Would be a great piece for a collector of the FATHER OF RADIO. I also did not plug this in due to its age and also it runs on DC power