most were labeled under the Lasko/Galaxy/Sanyo etc namesakes...even Sears slapped their name on a few....
most 9" and smaller versions had knobs, larger units had pushbuttons....
most all the parts are interchangeable, as long as you stick within the same blade size...
I have more 12" models than I can count....and a few 16" ones...
they are very durable, super quiet and powerful fans...
when ever I find them at thrift stores I grab them....
I still have the first one I ever got, a 12 inch blue blade....a Galaxy model from Eckerd Drugs back in 1975...
Oscillating fans are like waiting for a bus....When is that 'air' going to get here?