- A restored Schwarze Electric Company Bell from patent number 1,180,445, circa 1914. 3.
- PATENT 2,350,139 PAGE 1. AIRCRAFT ENGINE CONTROL SYSTEM.
- PAGE 8
- A restored Schwarze Electric Company Bell from patent number 1,180,445, circa 1914. 2.
- PAGE 3
- PAGE 7
- PAGE 4
- Brad's restored Schwarze Electric Company Bell from patent number 1,180,445, circa 1914.
- PAGE 5
- Page 1 of Rufus Oldenburger's engine governor patent.
- PATENT 2,530,139. SHEET 2 OF 2.
- Patent 3,051,138. Sheet 1 of 2. Hydraulic governors.
- PATENT 2,530,139. 2 SHEETS-SHEET 1.
- The Woodward Governor Company's factory down by the Rock River in the Water Power District in Rockford, Illinois.
- PAGE 2. AIRCRAFT ENGINE CONTROL SYSTEM HISTORY.