Donald J. Hefner

ME Medtronic: 1 patents #4,185 of 6,325Top 70%

📍 Windom, MN: #1,757 of 2,819 inventorsTop 65%

🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%

Overall (All Time): #3,158,100 of 4,157,543Top 80%

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Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
8435186	Quantifying autonomic tone with thoracic impedance	Douglas A. Hettrick, Shantanu Sarkar, Todd M. Zielinski	2013-05-07