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| Patents for Herbert C. Robb | |||||
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| Number | Date | Patentee | Title | Type | |
| 313,531 | Mar. 10, 1885 | H.C. Robb | Saw-mill head-block | sawmill headblocks | |
| 399,931 | Mar. 19, 1889 | H.C. Robb | Gang-edger | circular ripsaws | |