| Patents for T. H. Alexander |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 30,485 | Oct. 23, 1860 | J.F. Letellier | Steam Valve | steam engine valves |
| 107,378 | Sep. 13, 1870 | J.W. Huntoon | Improvement in Combined Corn Husker and Sheller and Grain Thrasher and Cleaner | corn huskers |
| 109,146 | Nov. 08, 1870 | D.S. Shanabrook | Improvement in sawing-machines | human powered machines |
| 121,396 | Nov. 28, 1871 | J.K. Milnor | Improvement in sawing-machines | circular saws |
| 123,246 | Jan. 30, 1872 | W.H. Dodge | Improvement in Countersinks | countersinks |
| 207,966 | Sep. 10, 1878 | A.L. Hill | Snout-Ring | hog ring |
| 243,895 | Jul. 05, 1881 | A.E. Hill | Hog Ringing Implement | hog ring |
