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

Lewis D. Dumbauld

TETexscan: 1 patents #2 of 9Top 25%
Phoenix, AZ: #2,590 of 6,660 inventorsTop 40%
Arizona: #13,050 of 32,909 inventorsTop 40%
Overall (All Time): #2,330,106 of 4,157,543Top 60%
2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4823386 Addressable subscriber cable television system Gilbert L. Tash 1989-04-18
4475123 Addressable subscriber cable television system Gilbert L. Tash 1984-10-02