DM

Donald M. Macaulay

BS Bj Services: 1 patents #126 of 250Top 55%
📍 Calgary, CA: #2,769 of 5,407 inventorsTop 55%
Overall (All Time): #3,582,085 of 4,157,543Top 90%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6232773 Consistent drag floating backing bar system for pipeline pigs and method for using the same Scott K. Jacobs, Robert S. Evenson 2001-05-15