RC

Richard D. Campbell

AS American Standard: 2 patents #7 of 44Top 20%
📍 Swissvale, PA: #1 of 2 inventorsTop 50%
🗺 Pennsylvania: #204 of 2,652 inventorsTop 8%
Overall (1982): #8,872 of 81,411Top 15%
2
Patents 1982

Issued Patents 1982

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4328541 Fail-safe digital comparator — 1982-05-04
4320881 Fail-safe decoder for digital track circuits — 1982-03-23