John B. McDonough

MC Mine Safety Appliances Company: 1 patents #1 of 12Top 9%

📍 Washington, PA: #11 of 27 inventorsTop 45%

🗺 Pennsylvania: #570 of 2,652 inventorsTop 25%

Overall (1982): #52,181 of 81,411Top 65%

Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4365981	Gas filter	—	1982-12-28