MD

Mark E. Duffy

GE: 2 patents #138 of 1,165Top 15%
📍 Shaker Heights, OH: #3 of 26 inventorsTop 15%
🗺 Ohio: #519 of 4,576 inventorsTop 15%
Overall (1997): #31,574 of 185,788Top 20%
2
Patents 1997

Issued Patents 1997

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5676579 Patterned optical interference coatings for electric lamps Thomas G. Parham, Frederick W. Dynys, Carl Gunter, John M. Davenport, Thomas Golz +4 more 1997-10-14
5675677 Lamp-to-light guide coupling arrangement for an electrodeless high intensity discharge lamp John M. Davenport, Richard L. Hansler, Kenneth S. King, William J. Cassarly, Thomas G. Parham +3 more 1997-10-07