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| Patents for James W. Clark | |||||
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| Number | Date | Patentee | Title | Type | |
| 113,629 | Apr. 11, 1871 | J.W. Clark | Improvement in picket-cutters | cutterheads | |
| 156,474 | Nov. 03, 1874 | J.H. Weaver, J.P. Beck | Improvement in machines for smoothing and cornering panels | sanding machines | |
| 268,395 | Dec. 05, 1882 | E.C. Flint | Barrel-hoop machine | hoop making machines | |