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- George E. Parker patent number 3,520,201. Page 2.
- George E. Parker patent number 3,520,201 for the type 2419 gas turbine engine governor.
- Patent number 3,520,201. 2 sheets-sheet 2.
- Patent number 3,520,201. 2 sheets-sheet 1.
- FLYWEIGHT ASSEMBLY FROM PATENT NUMBER 3,520,201.
- A Woodward Patent Book in the collection.
- A few of the Oldwoodward.com patent books in the collection.