DM

Douglas A. Marsden

DI Diggs: 2 patents #5 of 16Top 35%
📍 Marblehead, MA: #9 of 49 inventorsTop 20%
🗺 Massachusetts: #2,540 of 14,432 inventorsTop 20%
Overall (2024): #170,779 of 561,600Top 35%
2
Patents 2024

Issued Patents 2024

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D1041090 Animal training tool Zel Alexander Crampton, Jacqueline Prehogan, Isaac Langleben, Benjamin J. Beck, Michael T. McDuffee +2 more 2024-09-03
11917980 Collapsible animal containment assembly Jacqueline Prehogan, Isaac Langleben, Zel Alexander Crampton, Benjamin J. Beck, Michael T. McDuffee +1 more 2024-03-05