MH

Michael D. Helderman

📍 Bethany, OK: #27 of 49 inventorsTop 60%
🗺 Oklahoma: #6,781 of 12,736 inventorsTop 55%
Overall (All Time): #3,682,292 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5743815 Golf ball and indentification system — 1998-04-28