CS

Charles Semler

BG Barrick Gold: 1 patents #25 of 46Top 55%
Overall (All Time): #3,668,494 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5989330 Acid resistant cement composition Thomas Hawisher, Herman Pieterse, Richard A. Williams 1999-11-23