| Patents for John C. Butterfield |
Patents 1 -
10
of 15
      |
| Picture | Number | Date | Patentee | Title |
 | 108,326 | Oct. 18, 1870 | J.C. Butterfield, J. Hay | Improvement in trip-hammers |
 | RE4,470 | Jul. 18, 1871 | J. Hay, J.C. Butterfield | Improvement in trip-hammers |
 | 144,058 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers |
 | 144,059 | Oct. 28, 1873 | J.C. Butterfield | Improvement in power-hammers |
 | 150,524 | May 05, 1874 | J.C. Butterfield | Improvement in plow-beams |
 | 152,893 | Jul. 14, 1874 | C.C. Bradley | Improvement in horse hay-rakes |
 | 153,534 | Jul. 28, 1874 | J.C. Butterfield | Improvement in trip-hammers |
 | 156,276 | Oct. 27, 1874 | J.C. Butterfield | Improvement in power-hammers |
 | 176,400 | Apr. 18, 1876 | J.C. Butterfield | Improvement in atmospheric hammers |
 | 230,611 | Aug. 03, 1880 | J.C. Butterfield | Stamp-mill |
