DH

Douglas S. Hammond

HO Holophane: 1 patents #4 of 7Top 60%
📍 Newark, OH: #18 of 48 inventorsTop 40%
🗺 Ohio: #1,244 of 4,576 inventorsTop 30%
Overall (1997): #158,393 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5664878 Internally illuminated sign Gregory J. Subisak 1997-09-09