Robert K. MacKay

📍 South Walpole, MA: #2 of 6 inventorsTop 35%

🗺 Massachusetts: #42,150 of 88,656 inventorsTop 50%

Overall (All Time): #2,350,499 of 4,157,543Top 60%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4624086	Adjustable self-leveling sleeve insert for concrete passages	—	1986-11-25
4427173	Self-leveling sleeve insert for concrete passages	—	1984-01-24