Here's a quote from the book 'Electrolux the first 40 years' published in 1964.
"The way Electrolux does things-the Electrolux way-quality all the way-is reflected in it's meetings and gatherings. This notable one in the Waldorf in 1952 heralded the introduction of the Worlds First Automatic Vacuum Cleaner, the famous Model LX. This scene and others like it have been repeated many times in the four decades of Electrolux history. It is interesting to note that 12 years later Electrolux is still the world's only automatic vacuum cleaner."
Text might be out of sequence, but you get the idea. And by the way, I actually got to see these at the Electrolux museum in Old Greenwich, Connecticut. The year was 1968, I was working part-time for Electrolux in Hamden, Connecticut. I was only 17, and the youngest employee of Electrolux. My manager pulled strings to get me inside a building that only the top brass got into. In 1980, Hoover would do the same thing, but I'll save that story for the 31 anniversary of the V.C.C.C., on January 2nd.