| All Patents in class 74/44 |
Patents 1 -
15
of 64
      |
| Number | Date | Patentee | Title | Type |
| 7,919X | Dec. 31, 1833 | I. Brewster | Churn | churns |
| 4,289 | Nov. 26, 1845 | R.F. Loper | Reciprocating Steam Engine | steam engines |
| 6,073 | Jan. 23, 1849 | S. Jack, II | Combined Spring Rock-Drilling Machine | stone boring and drilling machines |
| 49,593 | Aug. 22, 1865 | H. Shattuck | Improved Atmospheric Hammer | power hammers |
| 54,413 | May 01, 1866 | J. Robertson | Improved Atmospheric Hammers | power hammers |
| 64,567 | May 07, 1867 | T.F. Preston | Power Hammer | power hammers |
| 68,740 | Sep. 10, 1867 | T.B. Harrison | Power Hammer | power hammers |
| 78,443 | Jun. 02, 1868 | A.R. Ehlers | Improvement in sawmills | reciprocating sawmills |
| 129,996 | Jul. 30, 1872 | L. Swenson | Improvement in Crank-Expanders | steam engine crank rods |
| 131,236 | Sep. 10, 1872 | E. Wallace | Improvement in mortising-machines | mortising machines |
| 139,233 | May 27, 1873 | I. Brown | Improvement in reciprocating steam-engines and saw-mills combined | circular sawmills |
| 184,419 | Nov. 14, 1876 | G.A. Ohl | Metal-Shaping Machine | metal shapers |
| 190,441 | May 08, 1877 | W.J. Liddell | Improvement in steam-engines | steam engines |
| 226,972 | Apr. 27, 1880 | E. Buss | Gas-Engine | gas and gasoline engines |
| 252,111 | Jan. 10, 1882 | C.E. McBeth, J.M. Long | Punching-machine | metal punching machines |
