Lausitz is a region, not a glassworks - so I think you'd have more luck if you googled Weisswasser, the tableware producer which was taken over by Austrian giant Stölzle Oberglas a few years ago. But there may have been some confusion - the blue vase could be WMF or Zwiesel rather than Weisswasser. Zwiesel is in Northern Bavaria, WMF in Württemberg.