Not interested in a pissing contest, but it is definitely in the German text in the link. And that is mainly based on German appliances, back then there were a lot of national companies, not working to certain standards. The high power burners mentioned in the German thread were introduced here in the mid sixties, at the same time "sensi-temp" burners were introduced, something you had much earlier.
The European market was quite different back then. In the past we established that a small country like the Netherlands (just over 10 million people) had many appliance manufacturers (I forgot how many washing machine factories there were in the mid 50's, but it might have been something like 70 or so) Just compare it to NYC having 60 washing machine factories. Safety standards were probably not as good as in the USA back then. The European Union has done a lot in that matter. Every country had it's own manufacturers and also had their own safety standards (which weren't that good). Even until today there are some Dutch manufacturers that still only make products for the Dutch market.