| All Patents in class 451/455 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 79,766 | Jul. 07, 1868 | C.T. Lamphere | Improvement in Eye Protestor or Chip Arrester for Lathes | metal lathe accessories and attachments |
| 159,723 | Feb. 09, 1875 | C. Van Haagen | Improvement in grinding apparatus | drill grinders |
| 375,821 | Jan. 03, 1888 | A. Vallentine, E.R. Hyde | Grinding Machine | grinding machines |
| 413,606 | Oct. 22, 1889 | J.J. Mefford | Lathe dust-trap | waste collection mechanisms |
| 427,091 | May 06, 1890 | A.B. Landis | Grinding-machine | grinders |
| 618,293 | Jan. 24, 1899 | G.J. Ridley | Water-feeding device for grinding-wheels | tool grinders |
| 987,589 | Mar. 21, 1911 | E.S. Mummert | Grinding Machine for Sharpening Edged Tools | sharpening machines |
| 1,633,412 | Jun. 21, 1927 | T.J. Kelleher | Eye and face shield for grinding wheels | bench or pedestal grinders |
| 1,689,176 | Oct. 23, 1928 | H.K. Spencer | Grinding Machine | surface grinders |
| 2,069,395 | Feb. 02, 1937 | H.E. Tautz | Safety shield | bench or pedestal grinders |
| 2,217,501 | Oct. 08, 1940 | R.R. Teichner | Safety shield | bench or pedestal grinders |
| 2,267,189 | Dec. 23, 1941 | S.A. Brown | Combined shield and illuminating means for grinding wheels | bench or pedestal grinders |
| 2,292,229 | Aug. 04, 1942 | E.C. Krueger | Splash guard for grinding machines | |
| 2,315,132 | Mar. 30, 1943 | C. Powers | Safety shield for bench grinders | bench or pedestal grinders |
| 2,340,553 | Feb. 01, 1944 | W.F. Obear, E.F. Obear | Abrasive cutoff machine | metal cutting circular saws |
