It's a year and years inlate reply...anyway i'll post.
Fidenza Vetraria was a glassware company place in Fidenza, near Parma, Italy.
It's started to manufacture glass for Glass Insulator (Folembray license), lighting (Holophane license) in the early years of the 1920.
Then started also to manufacture glassware and glass bricks.
In the end of the eighties owned the Saivo glass company, where moved the glass bricks production, in Florence.
In 1991 Bormioli Rocco bought Fidenza plants and item, but left the glass bricks to Vetroarredo, today the Seves company in Florence and other ww plants.
Fidenza since the end of the seventies stopped to produce lighting and insulator.
Today the fidenza Plant is still a Bormioli Rocco plant and some glassware item are still on the catalogue.