DH

David R. Heilman

📍 Fennville, MI: #2 of 4 inventorsTop 50%
🗺 Michigan: #3,671 of 10,373 inventorsTop 40%
Overall (2020): #501,339 of 565,922Top 90%
1
Patents 2020

Issued Patents 2020

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10731317 Adjustable coupling mechanism for a filter assembly for a retaining wall drainage tube Doug STOUTIN, David GENTRY, Anthony King, Kyle C. Edmondson 2020-08-04