RB

Roy Butterfield

ND National Research Development: 1 patents #307 of 1,071Top 30%
Overall (All Time): #4,112,824 of 4,157,543Top 100%
1
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4205362 Apparatus for moving along or through a material — 1980-05-27