Originally Posted by ellenbr
But the question still begs, did Seifert József have his own scope mount(s) and file for patent protection? I will have to thumb thru the German patents to see. In fact Seifert József may have expired @ or just before the scope craze and his son or his mechanics may have devised a scope mount system?

The (Royal) Hungarian Patent Office was founded in 1896. https://sztnh.gov.hu/en/home/hipo-130

But a patent could as well have been applied for in Vienna or in Berlin. After 1919, Bratislava (as Preßburg / Pozsony was then called) belonged to the Czechoslowakian Republic,so Karl Seifert might as well have a patent filed there. His national competitors would have sat in Weipert / Vejprty, also directly situated on the (other) border.