RR

Richard A. Ritter

📍 Billerica, MA: #396 of 621 inventorsTop 65%
🗺 Massachusetts: #56,664 of 88,656 inventorsTop 65%
Overall (All Time): #4,082,890 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4248258 Flat roof auxiliary drain system Gerald J. Devitt 1981-02-03