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| Patents for R. B. Fowler | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 257,532 | May 09, 1882 | G.C. Taft | Drilling-machine | |
 | CA-16,985 | Jun. 18, 1883 | G.C. Taft | Improvements in drilling machines | |
 | 287,209 | Oct. 23, 1883 | E.J. Worcester | Drilling-machine | |
 | 288,510 | Nov. 13, 1883 | G.C. Taft | Drilling Machine | |
 | 401,759 | Apr. 23, 1889 | J.C. Rocheeleau | Watch-makers Stacking Tool | |
 | 817,866 | Apr. 17, 1906 | M.E. McAfee | Sash-trimming machine | |