EM

Elmer S. McKee

MC Mine Safety Appliances Company: 3 patents #35 of 243Top 15%
📍 Pittsburgh, PA: #2,489 of 7,570 inventorsTop 35%
🗺 Pennsylvania: #23,606 of 74,527 inventorsTop 35%
Overall (All Time): #1,682,362 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4489164 Colorimetric method for detecting aldehydes in air Paul W. McConnaughey 1984-12-18
4478792 Colorimetric gas dosimeter Paul W. McConnaughey 1984-10-23
4348358 Colorimetric dosimeter Paul W. McConnaughey 1982-09-07