This is the 1 000 000 $ question!!!
Well, imagine that the son of Mr. Simon - whom i interviewed - was involved in the improvements of the "Bambi".
His father, Imre, was a business partner of Mr. Stern at the beginning years of the Szigony business.
Both Mr. Simon and Mr. Stern patented "their" invention.
(That's what i call "politically correct")
Mr. Simon patented in Hungary, of course.
Mr. Stern in...
Mr. Stern trademarked the name "Bambi" in Austria.
I don't know about Mr. Simon.
Fact is that the hungarian machines were also sold with either a "Bambi" badge or an engraved bakelite knob.
So who invented the "Bambi"?
My heart tells me all 3 of them.