AS

Andrew P. Steffan

DI Dresser Industries: 1 patents #109 of 242Top 50%
📍 Olean, NY: #40 of 77 inventorsTop 55%
🗺 New York: #67,335 of 115,490 inventorsTop 60%
Overall (All Time): #3,062,090 of 4,157,543Top 75%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9086182 Line stop flange Scott A. Butler, Michael A. Zampogna, Jr. 2015-07-21