Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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Al Duerr — 1 Patent

Calgary, CA: #2,801 of 5,407 inventorsTop 55%
Overall (All Time): #2,406,284 of 4,157,543Top 60%
1 Patents All Time
Al Duerr has been granted 1 US patent. All of these patents were granted in 2021. Al Duerr ranks #2,406,284 of 4,157,543 US inventors in our database (top 57.9%). Patent records list Al Duerr in Calgary, AB, CA.

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
11171580 Brake system and controller for use with a wellhead direct drive Aaron Brassard, John Doyle, Wray Sparling 2021-11-09