| All Patents in class 74/44 |
Patents 1 -
10
of 62
      |
| Picture | Number | Date | Patentee | Title |
| | 7,919X | Dec. 31, 1833 | I. Brewster | Churn |
| | 4,289 | Nov. 26, 1845 | R.F. Loper | Reciprocating Steam Engine |
| | 6,073 | Jan. 23, 1849 | S. Jack, II | Combined Spring Rock-Drilling Machine |
| | 49,593 | Aug. 22, 1865 | H. Shattuck | Improved Atmospheric Hammer |
| | 54,413 | May 01, 1866 | J. Robertson | Improved Atmospheric Hammers |
| | 64,567 | May 07, 1867 | T.F. Preston | Power Hammer |
| | 68,740 | Sep. 10, 1867 | T.B. Harrison | Power Hammer |
 | 78,443 | Jun. 02, 1868 | A.R. Ehlers | Improvement in sawmills |
| | 129,996 | Jul. 30, 1872 | L. Swenson | Improvement in Crank-Expanders |
 | 131,236 | Sep. 10, 1872 | E. Wallace | Improvement in mortising-machines |
