DH

David U. Hillstrom

MD Marketing Displays: 5 patents #1 of 4Top 25%
📍 Novi, MI: #1 of 58 inventorsTop 2%
🗺 Michigan: #52 of 4,492 inventorsTop 2%
Overall (1997): #4,750 of 185,788Top 3%
5
Patents 1997

Issued Patents 1997

Showing 1–5 of 5 patents

Patent #TitleCo-InventorsDate
5685054 Method for installing flexible sign panels with movable device Vladimir Yasnogorodskiy 1997-11-11
5682694 Outdoor menu display device 1997-11-04
5675923 Rigid sign with protective changeable indicia member John M. Sarkisian 1997-10-14
5647155 Sheet tensioning system 1997-07-15
5613763 Method for installing illuminated canopy system Brian Hillstrom 1997-03-25