Hi Bill.
I was brought up at Gränna Glasbruk, and somehow you have mixed thing up, badly.
Gänna is a small town by lake Vättern. There I no connection between the two glassworks, except for the town of Gränna. The current glasswork has been active since the early 60.ies.
Sincerely.
Paul Padoan (youngest son of Germano Padoan)