PC

Paul Campbell

DR Dresser-Rand: 1 patents #2 of 20Top 10%
RE Reedrill: 1 patents #1 of 2Top 50%
📍 Bend, OR: #6 of 36 inventorsTop 20%
🗺 Oregon: #142 of 1,309 inventorsTop 15%
Overall (1997): #28,192 of 185,788Top 20%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5662180 Percussion drill assembly James E. Coffman, Paul W. Crites 1997-09-02
5634524 Reverse percussion device — 1997-06-03