PA

Paul D. Andreychek

MC Mine Safety Appliances Company: 1 patents #104 of 243Top 45%
📍 Pittsburgh, PA: #4,559 of 7,570 inventorsTop 65%
🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%
Overall (All Time): #4,083,976 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4251246 Safety device for side loading filtering apparatus — 1981-02-17