DH

Douglas A Hartwell

📍 Vergennes, VT: #5 of 15 inventorsTop 35%
🗺 Vermont: #239 of 594 inventorsTop 45%
Overall (2016): #415,617 of 481,213Top 90%
1
Patents 2016

Issued Patents 2016

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
9314111 Convertible child carrier James H Sadler 2016-04-19