DR

David H. Roper

📍 Santa Monica, CA: #1,639 of 3,628 inventorsTop 50%
🗺 California: #185,134 of 386,348 inventorsTop 50%
Overall (All Time): #2,274,048 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5681279 Pill dispensing syringe Cathy M. Roper 1997-10-28
5425595 Pop-up traffic control device — 1995-06-20