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- Woodward... At the Heart of the System Since 1870.
- WOODWARD'S PROPELLER CONTROL SYSTEMS... At the Head of the Class.
- WOODWARD'S PROPELLER CONTROL SYSTEMS... At the Head of the Class.
- Woodward Propeller Control Systems... At the Head of the Class.
- The Woodward CSSA 210085 series propeller governor.
- The Proportional Governor Patent Number 2,474,140.
- The base plate.
- Some Hamilton Standard Company History.
- Patent number 2,474,140. Sheet 4.
- Patent number 2,474,140. Sheet 3.
- Patent number 2,474,140. Sheet 2
- Patent number 2,474,140. Page 4.
- Patent number 2,474,140. Page 3.
- Patent number 2,474,140. Page 2.
- Patent number 2,474,140. Page 1.