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Patents for R. S. Boswell | |||||
Number | Date | Patentee | Title | Type | |
876,680 | Jan. 14, 1908 | J.P. Bartholomay | Ratchet Screw Driver | ratcheting screwdrivers | |
898,556 | Sep. 15, 1908 | M.A. Clark | Dado Plane | dado planes |