MC

Michael A. Calvert

📍 Kirkcaldy, GB: #12 of 23 inventorsTop 55%
Overall (All Time): #4,066,166 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4318420 Ball valves — 1982-03-09