| Patents for H. Howson |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 60,774 | Jan. 01, 1867 | J. Molyneux | Improved excavator | excavators |
| 63,024 | Mar. 19, 1867 | C. Disston | Improvement in saws | saw teeth |
| 63,106 | Mar. 19, 1867 | G. Selsor | Improvement in Nail Hammers | hammers |
| RE3,052 | Jul. 28, 1868 | C. Disston | Improvement in Saws | saw teeth |
| 81,126 | Aug. 18, 1868 | E. Andrews | Improvement in saw-grinding machines | making sawblades |
| 82,374 | Sep. 22, 1868 | H. Asbury, J.G. Baker | Improvement in Bung-Borers | tapered reamers |
| 107,599 | Sep. 20, 1870 | H. Disston | Improvement in Combined Furnace or Oven and Tempering Dies | making sawblades |
| 109,881 | Dec. 06, 1870 | T.S. Disston | Improved Process for concave/vex Circular blades | |
| 174,211 | Feb. 29, 1876 | T.S. Disston | Improvement in Gages | gauges |
