Thanks, I read that thread you mentioned. The one I had sounded just like the 60s "lowboy" version.
It's interesting, because I collect electric fans, and GE's fans seem to closely mirror what their vacuums did. The fans changed from aqua to beige in 1965 or so. And someone said that GE stopped making vacuums in 1972 OR 1974 and that seems to be what I've been able to track down about GE fans as well. I am leaning toward fans being discontinued in 1972 though because I read an article once from 1971 that said GE had discontinued blenders and was soon going to stop making fans and heaters. And another article from spring 1972 said they had just stopped making fans.
But others have said GE made fans until 1975 and another said 1974 was when they were last sold, yet someone else said 1977!
But from what research I've done 1972 was when the majority of store ads in newspapers stopped showing them, although there were a few in 1973 and 1974.
I may try to go back and do this research with GE vacuums in mind - I'm not sure if the article from 1971 mentioned vacuums being discontinued or not.