I was looking at vacuum demos on youtube and came across a young lady giving a Rainbow demo, as I sold Rainbows new in 83 and 84 I decided to see if the demo had changed....well, after about 5 minutes I was rolling on the floor laughing at what she said.....She claimed that the Rainbow was invented in 1936 by a "Allergy Specialist by the name of Dr T Russ Hill!!!" LOL LOL LOL ...T Russ Hill WAS Rexairs President, he became President after being President Of Sales for AirWay...Certainly NOT a Allergist....What LIES are still being told by salesmen, I couldn't wait to call Clay Floyd and tell him because he knows about as much about T Russ Hill and Rexair Rainbow as anyone alive..He thought it very funny and complete nonsense....