RC

Robert W. Chappell

H( Her Majesty The Queen In Right Of Canada (...): 1 patents #11 of 114Top 10%
Overall (All Time): #4,031,986 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4440162 Soda lime half life indicator Richard B. H. Sewell, Lannie K. Yee 1984-04-03