John A. Christophersen

TC The Deister Concentrator Company: 1 patents #3 of 5Top 60%

📍 Fort Wayne, IN: #1,079 of 1,899 inventorsTop 60%

🗺 Indiana: #19,404 of 33,936 inventorsTop 60%

Overall (All Time): #4,003,433 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4617113	Flotation separating system	Fred J. Marquardt, Donald E. Zipperian	1986-10-14