Nice find, Linda. I had a wonderful Helene Curtis hairdryer all chrome model years ago that I found being trashed in the laneway where I was living. We could not fit it into the truck when we moved, left that behind and a ski workout machine. Wish I still had that hairdryer!
Love the seating in that 2nd to last one. Those photos are great! The one I had was very similar to this one
The patent number was granted May 1932 so it can't be before that, and expired 1949, so it can't be after that... I see a very Buck Rogers look to it, so I would have guessed mid 30s up to start of WWII.