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| Patents for William R. Jenkins Jr. | |||||
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| Picture | Number | Date | Patentee | Title | |
| 218,994 | Aug. 26, 1879 | J.M. McCoy | Improvement in gear-wheels | ||
| 237,872 | Feb. 15, 1881 | W.R. Jenkins, Jr. | Power Hammer | ||
 | 358,672 | Mar. 01, 1887 | W.R. Jenkins, Jr. | Power Hammer | |
| 370,260 | Sep. 20, 1887 | W.R. Jenkins, Jr. | Power Hammer | ||