Harold Hayden

📍 Delphi, IN: #11 of 19 inventorsTop 60%

🗺 Indiana: #19,404 of 33,936 inventorsTop 60%

Overall (All Time): #4,095,858 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4286763	Derailment emergency valve	—	1981-09-01