DH

Douglas Hanneken

HA Handi-Craft: 2 patents #1 of 4Top 25%
📍 Chesterfield, MO: #81 of 754 inventorsTop 15%
🗺 Missouri: #277 of 2,600 inventorsTop 15%
Overall (2021): #166,007 of 548,734Top 35%
2
Patents 2021

Issued Patents 2021

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D930577 Battery pack 2021-09-14
10881228 Spoutless drinking cup Charles H. Miller, Xiangwen Zhang, Mark D. Reed 2021-01-05