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| Patents for R. F. Crawford | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 119,317 | Sep. 26, 1871 | T.A. Chandler | Improvement in Drill and Nut-Wrenches | |
 | 347,681 | Aug. 17, 1886 | W.H. Bradley | Improved Adjustable Carriage-Wrench | |
 | 483,677 | Oct. 04, 1892 | G.W. Scott | Hinge-seat cutter | |