DH

Douglas Dean Harkness

📍 Ithaca, MI: #4 of 13 inventorsTop 35%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,121,398 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7712544 Tool bar with forward folding wings John G. Misenhelder 2010-05-11
7562719 Tool bar with forward folding wings John G. Misenhelder 2009-07-21