DH

David R. Heilman

📍 Fennville, MI: #2 of 5 inventorsTop 40%
🗺 Michigan: #3,395 of 9,817 inventorsTop 35%
Overall (2018): #445,642 of 503,207Top 90%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10124281 Filter assembly for retaining wall drain holes Doug STOUTIN, David GENTRY, Anthony King, Kyle C. Edmondson 2018-11-13