DS

David A. Spence

NO Nordco: 1 patents #4 of 12Top 35%
Overall (2018): #440,497 of 503,207Top 90%
1
Patents 2018

Issued Patents 2018

Patent #TitleCo-InventorsDate
9938669 Roadworthy rail ballast regulator James W. Boyd, Justin J. Pipol, Michael Thompson 2018-04-10