DJ

David Ward Marcellus, Jr.

GS General Railway Signal: 1 patents #2 of 12Top 20%
🗺 New York: #1,999 of 7,187 inventorsTop 30%
Overall (1997): #162,517 of 185,788Top 90%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5633628 Wheelset monitoring system Joseph M. Denny, Gordon F. Quigley 1997-05-27