SC

Stephen J. Campbell

HI Heartland Industries: 2 patents #2 of 2Top 100%
AI American Management Systems, Incorporated: 1 patents #20 of 77Top 30%
PO Polaroid: 1 patents #513 of 898Top 60%
📍 Needham, MA: #287 of 796 inventorsTop 40%
🗺 Massachusetts: #27,608 of 88,656 inventorsTop 35%
Overall (All Time): #1,257,629 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7006994 Automated receivables management system Robert Owen Kramer, Jame Cofran, Randall S. Wellons 2006-02-28
5375381 Building kit Owen H. Park 1994-12-27
4894963 Building kit 1990-01-23
4336583 Controlled inductive storage DC-to-DC converter Warren Hambly, George C. Harrison 1982-06-22