DN

Douglas A. Newberg

NT Nl Technologies: 3 patents #1 of 2Top 50%
📍 Annapolis, MD: #1 of 31 inventorsTop 4%
🗺 Maryland: #134 of 2,389 inventorsTop 6%
Overall (2002): #30,568 of 266,432Top 15%
3
Patents 2002

Issued Patents 2002

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
6491283 Sanitary drain valve design 2002-12-10
6423548 Housing for receptacle filling Richard R. Newberg 2002-07-23
6345640 Dip tube valve assembly 2002-02-12