Patent Leaderboard
USPTO Patent Rankings Data through Sept 30, 2025
DH

David Allan Holdway

Overall (All Time): #3,329,740 of 4,157,543Top 85%
1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7557282 Hardtail converter block for a tremolo equipped guitar 2009-07-07