DS

David A. Stewart

MC Mine Safety Appliances Company: 2 patents #5 of 25Top 20%
📍 Baltimore, MD: #10 of 133 inventorsTop 8%
🗺 Maryland: #78 of 1,164 inventorsTop 7%
Overall (1989): #29,283 of 140,708Top 25%
2
Patents 1989

Issued Patents 1989

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4859305 Electrochemical cell Alan A. Schneider, Joseph D. Jolson, RaeAnn M. Auel, John F. Price 1989-08-22
4797180 Method for the detection of noxious gases Alan A. Schneider, Joseph D. Jolson, RaeAnn M. Auel, John F. Price 1989-01-10