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Charles R. Drafts

US Union Switch & Signal: 1 patents #25 of 78Top 35%
Overall (All Time): #3,579,002 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6218797 Crossing guard maintenance system and associated method N. Rodger Williamson, III 2001-04-17