DH

David R. Heilman

📍 Fennville, MI: #12 of 39 inventorsTop 35%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #1,914,651 of 4,157,543Top 50%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 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
10124281 Filter assembly for retaining wall drain holes Doug STOUTIN, David GENTRY, Anthony King, Kyle C. Edmondson 2018-11-13