| Patents for John C. Butterfield |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 108,326 | Oct. 18, 1870 | J.C. Butterfield, J. Hay | Improvement in trip-hammers | drop hammers |
| RE4,470 | Jul. 18, 1871 | J.C. Butterfield, J. Hay | Improvement in trip-hammers | drop hammers |
| 144,058 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers | drop hammers |
| 144,059 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers | drop hammers |
| 150,524 | May 05, 1874 | J.C. Butterfield | Improvement in plow-beams | plows |
| 152,893 | Jul. 14, 1874 | C.C. Bradley | Improvement in horse hay-rakes | hay or straw rakes |
| 153,534 | Jul. 28, 1874 | J.C. Butterfield | Improvement in trip-hammers | drop hammers |
| 156,276 | Oct. 27, 1874 | J.C. Butterfield | Improvement in power-hammers | drop hammers |
| 176,400 | Apr. 18, 1876 | J.C. Butterfield | Improvement in atmospheric hammers | drop hammers |
| 230,611 | Aug. 03, 1880 | J.C. Butterfield | Stamp-mill | ore processing apparatus |
| 264,859 | Sep. 26, 1882 | J.C. Butterfield | Atmospheric hammer | drop hammers |
| 285,387 | Sep. 25, 1883 | J.C. Butterfield | Power Hammer | power hammers |
| 285,388 | Sep. 25, 1883 | J.C. Butterfield | Stamp-mill | ore processing apparatus |
| 285,389 | Sep. 25, 1883 | J.C. Butterfield | Atmospheric hammer | drop hammers |
| 285,391 | Sep. 25, 1883 | J.C. Butterfield | Mortar for stamp-mills | ore processing apparatus |
