- PATENT NUMBER 5,118,259.
- Aircraft engine propeller governor 6
- US5215444-7
- US5215444-22
- Aircraft engine propeller governor patent page 1.
- US5436538-8
- Propeller Governor 4
- Patent 220 970
- Patent 220 970 c
- US4794544-3
- Propeller Governor 1
- US5215444-5
- Aircraft engine propeller governor 3
- Aircraft engine propeller governor 5
- WOODWARD COMPENSATING GOVERNOR Patent No 583 527 June 1 1897 006