Improvements in drum rotor fans, especially for free expulsion (Machine-translation by Google Translate, not legally binding)
ES292767A3
Improvements in the radial and centrifugal blow machines, of preference of the type of drum rotor (Machine-translation by Google Translate, not legally binding)
GB954369A
Drum-type fan rotor with forwardly curved blades
ES213928A1
Improvements in the disk regulating device for rotating machines or radiant centrifuges, especially blowing (Machine-translation by Google Translate, not legally binding)
