DH

Douglas Hanneken

DB Dr. Brown'S: 1 patents #4 of 7Top 60%
📍 Chesterfield, MO: #147 of 605 inventorsTop 25%
🗺 Missouri: #483 of 1,865 inventorsTop 30%
Overall (2025): #402,231 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12320690 Powder dispenser Bernard J. Kemper 2025-06-03