| Patents for Thomas P. How |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| RE295 | Jan. 30, 1855 | C. Monnin, W.M. Booth | Improvement in fastening lanterns | |
| 13,273 | Jul. 17, 1855 | O. Palmer | Rotary wrecking-pump | rotary pumps |
| 20,192 | May 11, 1858 | W.A. Clark | Method of seating the movable cutter in expansive bits | adjustable drill bits |
| 45,455 | Dec. 13, 1864 | G. Rowden, C.W. Dickinson | Improved Engine Turning Lathe | ornamental lathes |
| 84,698 | Dec. 08, 1868 | A. Judson | Improved lathe-chuck | metal lathes |
| 127,438 | Jun. 04, 1872 | A.P. Stephens | Improvement in the manufacture of cement pipes | pipes |
