DH

D. Bernard Heffernan

NP National Railroad Passenger: 1 patents #1 of 7Top 15%
📍 Harleysville, PA: #15 of 50 inventorsTop 30%
🗺 Pennsylvania: #1,500 of 5,512 inventorsTop 30%
Overall (2002): #81,969 of 266,432Top 35%
1
Patents 2002

Issued Patents 2002

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6386492 Temporary sign holder David M. Brown, Nicholas J. Skoutelas 2002-05-14