| All Patents in class 451/449 |
Patents 1 -
15
of 32
      |
| Number | Date | Patentee | Title | Type |
| 29,680 | Aug. 21, 1860 | H. Disston | Machine for grinding saw-blades | tool making machines |
| 233,488 | Oct. 19, 1880 | S. Darling | Art of Manufacturing Mathematical Instruments | |
| 354,498 | Dec. 14, 1886 | P. Van Den Kerchove | Device for Cooling Machine Tools | metal lathe accessories and attachments |
| 405,706 | Jun. 25, 1889 | E.R. Hyde | Surface Grinding or Planing Machine | surface grinders |
| 411,729 | Sep. 24, 1889 | W.J. Perkins | Saw-grinding machine | saw sharpening machines |
| 487,140 | Nov. 29, 1892 | C.A. Worden | Machine for sharpening razors | |
| 544,439 | Aug. 13, 1895 | A.B. Landis | Grinding-machine | grinders |
| 945,463 | Jan. 04, 1910 | A.B. Landis | Machine for grinding cutters and reamers | grinders |
| 986,688 | Mar. 14, 1911 | P. Catucci | Hob-grinding machine | hob grinding machines |
| 995,256 | Jun. 13, 1911 | E.J. Kearney, T. Trecker | Milling-machine | milling machines |
| 1,036,783 | Aug. 27, 1912 | E.J. Bein | Abrasive apparatus | sanding machines |
| 1,337,139 | Apr. 13, 1920 | G.C. Kimmel | Grinding Machine | internal grinders |
| 1,337,140 | Apr. 13, 1920 | G.C. Kimmel | Grinding Machine | internal grinders |
| 1,672,117 | Jun. 05, 1928 | S. Einstein | Centralized Control for Grinders | grinding machines |
| 1,718,562 | Jun. 25, 1929 | J.B. Armitage, E.J. Kearney | Machine Tool Organization | milling machines |
