| All Patents of Type: grinders |
Patents 1 -
15
of 198
      |
| Number | Date | Patentee | Title | Type |
| 8,224X | May 28, 1834 | J. Wheaton | Elliptical Spindle Grinder | grinders |
| 3,105 | May 26, 1843 | T. Fairbanks | Discharging Dust from Grinding Wheels | grinders |
| 72,636 | Dec. 24, 1867 | W.C. Hicks | Grinding and Polishing Concave Surfaces | polishing and buffing machinery |
| 81,608 | Sep. 01, 1868 | J.P. Curtiss | Machine for Grinding Metal Articles | grinders |
| 81,611 | Sep. 01, 1868 | J.W. Douglas | Grindstone Frame | grinders |
| 103,242 | May 17, 1870 | J. Shaughnessy | Improvement in Tool Grinding Attachment for Lathes | grinders |
| 105,392 | Jul. 12, 1870 | W.L. Washburn | Grinding Apparatus | grinders |
| D4,321 | Aug. 30, 1870 | A. Wallace | Design for the frame of an emery grinder | grinders |
| 124,134 | Feb. 27, 1872 | C. Heaton | Improvement in cowls for emery-wheels | grinders |
| 130,014 | Jul. 30, 1872 | C. Burkholder | Improvement in Grindstones | grinders |
| 145,488 | Dec. 16, 1873 | P.D. Cummings | Grinding Machines | grinders |
| GB-187,501,702 | May 07, 1875 | J.B. Handyside | Improvements in machine tools for grinding metallic surfaces | grinders |
| 193,437 | Jul. 24, 1877 | V.F. Prentice, E.J. Worcester | Improvement in machines for grinding mower and reaper knives | grinders |
| 197,711 | Nov. 27, 1877 | E.J. Worcester | Improvement in machines for grinding lawn-motor cutter | grinders |
| 205,416 | Jun. 25, 1878 | F.D. Randall, L.D. Dana | Improvement in Grinding-Machines | grinders |
