DM

Derrick Merrill

RO Rotabroach: 2 patents #1 of 4Top 25%
📍 Dronfield, GB: #5 of 17 inventorsTop 30%
Overall (All Time): #2,302,519 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5246318 Annular hole cutter 1993-09-21
5218888 Annular hole cutter 1993-06-15