| All Patents in class 451/246 |
Patents 1 -
15
of 48
      |
| Number | Date | Patentee | Title | Type |
| 30,209 | Oct. 02, 1860 | J.D. Custer | Saw-grinding machine | saw sharpening machines |
| 39,317 | Jul. 21, 1863 | J. Dodge | Improvement in machines for grinding and polishing cutlery | tool making machines |
| 76,301 | Apr. 07, 1868 | E. Carrington, E.O. Carrington | Improvement in Machine for Grinding and Cutting Down Augers | making drills and augers |
| 175,262 | Mar. 28, 1876 | H.D. Stover | Improvement in machines for polishing diamonds, &c. | |
| 215,901 | May 27, 1879 | C. Fest | Grinding Lathe | metal lathe accessories and attachments |
| 253,778 | Feb. 14, 1882 | H.R. Sillman | Machine for making spools, &c. | spool or bobbin machines |
| 286,810 | Oct. 16, 1883 | F. Hanson | Wood-turning lathe | wood lathes |
| 344,777 | Jun. 29, 1886 | G.M. Griswold | Automatic Metal Grinding Machine | cylindrical grinders |
| 372,001 | Oct. 25, 1887 | C.V. Woerd | Lathe for Forming Pivots of Balance Wheel Staffs | watchmakers lathes |
| 400,660 | Apr. 02, 1889 | H.C. Gilbert | Machine for grinding Shimer-molding bits, &c. | sharpening machines |
| 490,471 | Jan. 24, 1893 | G. Carlyle | Machine for Forming Pearl Buttons | button making machinery |
| 548,051 | Oct. 15, 1895 | A. Hartley | Grinder | tool grinders |
| 558,458 | Apr. 14, 1896 | J. Neumeister | Pearl Button Machinery | button making machinery |
| 614,190 | Nov. 15, 1898 | O.S. Walker | Magnetic chuck | magnetic chucks |
| 648,602 | May 01, 1900 | J.E. Thropp, Jr. | Machine for Cutting Rubber Sealing Rings for Jars, &c. | material cutting machines |
