SD

Steven W. Drumheller

IN Ingersoll-Rand: 2 patents #246 of 828Top 30%
📍 Roanoke, VA: #234 of 603 inventorsTop 40%
🗺 Virginia: #12,642 of 34,511 inventorsTop 40%
Overall (All Time): #2,278,355 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5511800 Reciprocal chuck for paving breaker Ted C. Chang 1996-04-30
5431235 Reciprocal chuck for paving breaker Ted C. Chang 1995-07-11