hi - nice glasses. my opinion is that the decoration is wheel engraved rather than etching, which is a wet acid process, and I could be very wrong but to my eyes they have an almost champagne saucer shape - would you agree?
Hate to be a kill-joy, but since uranium was used in vast quantities of drinking glasses, in a variety of countries in Europe and probably elsewhere, then finding a maker is really a non-starter, unfortunately. Best we might be able to say is they were likely made somewhere in the first half of the C20, and my thoughts would be nearer the end of that period.
Is it possible that we might see a picture of them 'glowing', please?