RR

Robert O. Ruff

IN Ingersoll-Rand: 2 patents #4 of 67Top 6%
📍 Cincinnati, OH: #88 of 584 inventorsTop 20%
🗺 Ohio: #519 of 4,576 inventorsTop 15%
Overall (1997): #25,535 of 185,788Top 15%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5669198 Anchor for metal door frame — 1997-09-23
5619823 Pre-finished metal door frame Donald L. King 1997-04-15