| Patents for P. H. Watson |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 5,336 | Oct. 23, 1847 | J. Brown | Sawing hand-rails for stairs | scrollsaws |
| 5,902 | Nov. 07, 1848 | J.W. Chapman, W.Z. Chapman | Honing Machine | sharpening machines |
| 6,725 | Sep. 18, 1849 | E.R. Morrison | Machinery for riving and dressing shingles | shingle machines |
| 6,762 | Oct. 02, 1849 | N. Hodge | Mode of operating brakes for cars | railroad car brakes |
| 6,809 | Oct. 23, 1849 | E.G. Allen | Endless-bed planer | wood planers |
| 6,916 | Dec. 04, 1849 | W. Andrew, S.A. Bantz | Mill for grinding bark | bark processing machines |
| 7,045 | Jan. 22, 1850 | E.K. Wisell | Chuck for boring and mortising machines | wheelwright |
| 7,556 | Aug. 06, 1850 | E.K. Wisell | Tenon-bit | tenoning machines |
| 7,635 | Sep. 10, 1850 | S. Spencer | Improvement in mortising-machines | mortising machines |
| 7,681 | Oct. 01, 1850 | R. Daniels | Vegetable-cutter | |
| 7,943 | Feb. 18, 1851 | I. Straub | Improvement in sawmills | reciprocating sawmills |
| 8,808 | Mar. 16, 1852 | D. Stearns | Planing-machine | wood planers |
| 8,823 | Mar. 23, 1852 | J. Howarth | Planing-machine | wood planers |
| 8,990 | Jun. 01, 1852 | B.J. Tayman | Machine for turning and polishing | specialty woodworking machines |
| 9,015 | Jun. 15, 1852 | R. Daniels | Manufacture of granular fuel from brush-wood and twigs | firewood machines |
