RM

Robert B. Mayer

📍 Manassas, VA: #1 of 12 inventorsTop 9%
🗺 Virginia: #58 of 1,067 inventorsTop 6%
Overall (1989): #17,003 of 140,708Top 15%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4822485 Recirculating sand filter valve 1989-04-18
4818384 Recirculating sand filter 1989-04-04