Home / Authors / De Havilland Propellers Limited and Robert John Perdue.

Books by De Havilland Propellers Limited and Robert John Perdue.

All books by this author

1 books found
ORIGINAL PATENT APPLICATION NUMBER 720,600 FOR IMPROVEMENTS IN HOLLOW BLADES FOR THE AERODYNAMIC ROTORS OF HELICOPTERS AND WIND MOTORS. (HERTFORDSHIRE AND MIDDLESEX).
ORIGINAL PATENT APPLICATION NUMBER 720,600 FOR IMPROVEMENTS…
By: De Havilland Propellers Limited and Robert John Perdue.
View Details