William E. Douglas

📍 Johnstown, PA: #10 of 24 inventorsTop 45%

🗺 Pennsylvania: #989 of 4,367 inventorsTop 25%

Overall (1997): #60,368 of 185,788Top 35%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5661474	Highway work zone intrusion alarm system	—	1997-08-26