DH

David W. Hegdahl

3M: 3 patents #4,214 of 11,543Top 40%
📍 Lino Lakes, MN: #148 of 309 inventorsTop 50%
🗺 Minnesota: #19,064 of 52,454 inventorsTop 40%
Overall (All Time): #1,591,367 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
7001475 Film structures and methods of making film structures Ronald W. Ausen, Sundaravel Damodaran, Hak-Rhim Han 2006-02-21
6686026 Micro-channeled protective film Brian E. Spiewak 2004-02-03
5418339 Pneumatic tool having noise reducing muffling structure Gloria D. Bowen, Zubin P. Daruwala, Thomas J. Scanlan, Jeffrey W. McCutcheon 1995-05-23