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USPTO Patent Rankings Data through Sept 30, 2025
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Betty L. Christensen — 1 Patent

Chandlers Valley, PA: #1 of 1 inventorsTop 100%
Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,040,235 of 4,157,543Top 100%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4468829 Cleaning and deburring tool for spent cartridge cases 1984-09-04