No dear Pip. Ia m not splitting the hair, I use to be true always (when my wife in not at home).
Unortunatly with dying Crystalex seems to me is dead also web site
www.glassrevue.com, or now does not work.
Here you could read:
"Po založenà národnÃho podniku Železnobrodské sklo se stal jeho výtvarnÃkem. Na sklářské Å¡kole byl externÃm učitelem hutnÃch figurek, prvnÃm výtvarnÃkem z jeho iniciativy vytvořeného oddělenà hutnÃho tvarovánà skla a tři roky ředitelem, potom se jako výtvarnÃk vrátil do Železnobrodského skla."
So if you should clearly see that "he had worked for ZBS from founding this company and externaly had teached at glass-school and he has found at school the departement of free hand hot forming of glass, for three years Klinger has interupted his job in ZBS and was director of this school, and than has returned back to ZBS as designer. :-)))
Or have you better understanding Czech? :-))
Jindrich