- Remains of “Integrale” decal on propeller made by Industrial Works of Wapienice (photo M. Peikert)
- “Ikar” decal on Integrale Warszawa propeller made by Szomański’s factory (photo R. Wróbel)
- Integrale Warszawa marking stamped on a hub of propeller made in August 1928 by Szomański’s factory (photo R. Wróbel)
- Integrale propeller on Avia WZ-1 engine (photo: Narodowe Archiwum Cyfrowe)
Propellers marked as Integrale were manufactured by at least two factories:
– Fabryka Śmigieł i Wyrobów Drzewnych Włodzimierz Szomański (Propeller And Wooden Products Factory owned by Włodzimierz Szomański) Warsaw,
– Wapienickie Zakłady Przemysłowe (Industrial Works of Wapienice) located at Bielsko-Wapienice.
There is at least one known propeller with “Integrale Warszawa” marking on the hub and Szomański’s “Ikar” decal on a front of blade.
Propellers manufactured by factory in Bielsko had factory name stamped on the hub and Integrale decal on each blade.