| Patents for Harold Serrell |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 98,028 | Dec. 21, 1869 | J. Dickinson, E.D. Dickinson, G.T. Chattaway | Grinding Machine | sharpening machines |
| D3,994 | Apr. 26, 1870 | E. Moore | Design for the Shape of the Slots Between Saw-Teeth | crosscut saw teeth |
| 113,048 | Mar. 28, 1871 | P.J. Hardy | Improvement in turning-lathes | wood lathes |
| 144,155 | Oct. 28, 1873 | M. Stephens | Improvement in rotary shears for metal | metalworking machines |
| 163,341 | May 18, 1875 | M. Stephens | Improvement in devices for connecting, holding, and punching sections of sheet-metal pipe | sheet metal |
| 184,804 | Nov. 28, 1876 | F.A. Stohlmann | Improvement in surgical saws | surgeon |
| 186,779 | Jan. 30, 1877 | H. Winter | Improvement in wood-bending machines | wood bending machines |
| 232,892 | Oct. 05, 1880 | G.A. Hickcox | Vise | bench vises |
| 243,480 | Jun. 28, 1881 | W.M. Whiting | Belt Clasp | pliers |
| 310,978 | Jan. 20, 1885 | J.L. Bogert | Rotary valve for steam-engines | steam engine valves |
| 405,110 | Jun. 11, 1889 | R. McChesney | Guide for band-saws | bandsaw guides |
| 427,220 | May 06, 1890 | W.A. Bernard | Pliers | pliers |
| D20,358 | Dec. 02, 1890 | J.T. Pedersen | Tool Handle | tool handles |
| 452,019 | May 12, 1891 | J.T. Pedersen | Spacing Instrument | measurement gauges |
| 454,542 | Jun. 23, 1891 | W.A. Bernard | Vise | bench vises |
