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| Patents for J. S. Darling | |||||
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| Number | Date | Patentee | Title | Type | |
| 144,388 | Nov. 11, 1873 | P.M. Cummings | Improvement in head-blocks | sawmill headblocks | |
| 153,980 | Aug. 11, 1874 | F.L. Blakely, A. Philipp | Improvement in relishing-machines | wood shapers | |