Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
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David L. Epperson — 5 Patents in 2019

FLFluke: 5 patents #2 of 82Top 3%
Everett, WA: #4 of 191 inventorsTop 3%
Washington: #773 of 14,738 inventorsTop 6%
Overall (2019): #37,592 of 560,194Top 7%
5 Patents 2019

Issued Patents 2019

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
10473696 Wireless rogowski coil system Matthew Carl-Robert Bannister, Clark N. Huber 2019-11-12
10359494 Proving unit for non-contact voltage measurement systems Ricardo Rodriguez 2019-07-23
10352967 Non-contact electrical parameter measurement systems Ronald Steuer, Peter Radda, Ricardo Rodriguez, Patrick Scott Hunter, Paul A. Ringsrud +4 more 2019-07-16
10254375 Proving unit for voltage measurement systems Ricardo Rodriguez 2019-04-09
10209271 Handheld measurement system with selectable options Glen Howard Vetter, Joseph V. Ferrante 2019-02-19