PH

Paul M. Helderle

📍 Boulogne, FR: #4 of 15 inventorsTop 30%
Overall (2002): #142,459 of 266,432Top 55%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6378611 Procedure and device for treating well perforations 2002-04-30