While consulting various Teletext services to track the latest projections of the European elections, I was reminded how many German TV stations employ advanced Telext features to render graphical station logos. (Teletext Level 2.5, from 1995!)
Well, four, at least… :)

Interesting graphics glitch of ZDF’s logo loading
Here there are, in their full glory, along with their Teletext level 1 fallback renditions.