| Patents for Amos Harrold |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| 509,029 | Nov. 21, 1893 | A. Harrold | Sawmill dogging mechanism | sawmill dogs |
| 560,129 | May 12, 1896 | W.H. Pfrimmer, A. Harrold | Steam steering-gear | |
| 755,770 | Mar. 29, 1904 | A. Harrold | Traction-engine wheel | |
| 822,449 | Jun. 05, 1906 | A. Harrold | The Harrold feedworks mechanism for sawmill carriages | |
| 848,548 | Mar. 26, 1907 | A. Harrold | Guide for saws | sawmill accessories |
| 850,644 | Apr. 16, 1907 | A. Harrold | Gear for traction-engines | |
| 868,087 | Oct. 15, 1907 | A. Harrold | Cable-feed mechanism for sawmills | sawmill feed works |
| RE12,930 | Mar. 23, 1909 | A. Harrold | Gear for traction-engines | |
