DC

David D. Calhoun

📍 Duxbury, MA: #9 of 22 inventorsTop 45%
🗺 Massachusetts: #5,064 of 14,432 inventorsTop 40%
Overall (2024): #498,200 of 561,600Top 90%
1
Patents 2024

Issued Patents 2024

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11897787 Zero discharge water treatment apparatus and method Mark D. Lorusso, R. Edward Rose, Jr., Ernest M. Hawkesworth 2024-02-13