| Patents for P. H. Watson |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 5,336 | Oct. 23, 1847 | J. Brown | Sawing hand-rails for stairs |
 | 5,902 | Nov. 07, 1848 | J.W. Chapman, W.Z. Chapman | Honing Machine |
 | 6,725 | Sep. 18, 1849 | E.R. Morrison | Machinery for riving and dressing shingles |
 | 6,762 | Oct. 02, 1849 | N. Hodge | Mode of operating brakes for cars |
 | 6,809 | Oct. 23, 1849 | E.G. Allen | Endless-bed planer |
 | 6,916 | Dec. 04, 1849 | W. Andrew, S.A. Bantz | Mill for grinding bark |
 | 7,045 | Jan. 22, 1850 | E.K. Wisell | Chuck for boring and mortising machines |
 | 7,556 | Aug. 06, 1850 | E.K. Wisell | Tenon-bit |
 | 7,635 | Sep. 10, 1850 | S. Spencer | Improvement in mortising-machines |
 | 7,681 | Oct. 01, 1850 | R. Daniels | Vegetable-cutter |
