Levi S. Longenecker

📍 Pittsburgh, PA: #2,489 of 7,570 inventorsTop 35%

🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%

Overall (All Time): #1,683,141 of 4,157,543Top 45%

Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #	Title	Co-Inventors	Date
4383678	Electric furnace scrap handling mill layout	—	1983-05-17
4328388	Electro furnace feeding and furnace fume utilization and control	—	1982-05-04
4199652	Air cooled electric arc furnace	—	1980-04-22