The Dudbridge Iron Works Limited of Stroud, Gloucestershire, England was a reciprocating engine manufacturer including Salmson water-cooled aero-engines under licence from Salmson in France from 1914 to 1918.
[1] Bullock, Arthur (2009).
Gloucestershire Between the Wars: A Memoir.
The History Press.
ISBN 978-0-7524-4793-3.