| All Patents in class 451/451 |
Patents 16 -
30
of 51
      |
| Number | Date | Patentee | Title | Type |
| 763,605 | Jun. 28, 1904 | D. Hepp | Tool-holder | |
| 838,556 | Dec. 18, 1906 | H. Lutter, E.A. Gies | Grinding-machine | bench or pedestal grinders |
| 967,054 | Aug. 09, 1910 | F.G. Price | Machine for finishing lumber | |
| 1,006,529 | Oct. 24, 1911 | R.S. Brown | Journal Box | polishing machines |
| 1,214,241 | Jan. 30, 1917 | V.M. Tuthill | Universal knife-holding bar | woodworking machine sharpening mechanisms |
| 1,254,111 | Jan. 22, 1918 | W.F. Barry | Grinding or Polishing Apparatus | polishing and buffing machinery |
| 1,351,908 | Sep. 07, 1920 | A.F. Howe | Safety-guard for rotary grinding machines | bench or pedestal grinders |
| 1,372,033 | Mar. 22, 1921 | W.A. Marschke, F.W. Marschke | Grinder-hood | |
| 1,405,922 | Feb. 07, 1922 | C. Knowles | Wheel Guard for Grinding Machines | grinding attachments |
| 1,406,914 | Feb. 14, 1922 | V.A. Virgilio | Adjustable safety guard for emery wheels | grinders |
| 1,536,565 | May 05, 1925 | E.L. Connell | Guard for grinding wheels | bench or pedestal grinders |
| 1,550,712 | Aug. 25, 1925 | J.A. Smith | Grinding machine | bench or pedestal grinders |
| RE16,534 | Jan. 11, 1927 | J.J. Van Hamersveld, E.P. Burrell | Way Guard for Machine Tools | metalworking machine mechanisms |
| 1,638,459 | Aug. 09, 1927 | E. Ritz | Grinding-wheel guard | bench or pedestal grinders |
| 1,650,669 | Nov. 29, 1927 | D. Turcott | Turning machine | wood lathes |
