| All Patents in class 451/123 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
| | 370,003 | Sep. 13, 1887 | C.M. Brown | Grinding Lathe |
| | 441,570 | Nov. 25, 1890 | R.B. Leighton | Lens Grinding Machine |
| | 498,240 | May 30, 1893 | R. Conrader | Reamer Grinding Machine |
 | 508,196 | Nov. 07, 1893 | T.A. Willson, H. Bilgram | Machine for grinding the edges of spectacle or eyeglass lenses |
 | 612,239 | Oct. 11, 1898 | L.E. Harper, C.L. Grohmann | Machine for dressing metals or other materials |
 | 839,080 | Dec. 18, 1906 | C.O. Smith | Machine for grinding ball bearing races |
| | 1,522,465 | Jan. 06, 1925 | G.C. Kimmel | Internal Grinding Machine |
| | 1,972,623 | Sep. 04, 1934 | R.E. Harrison | Grinding Machine |
| | 2,006,554 | Jul. 02, 1935 | C. Herfurth | Grinding Machine |
| | 2,135,894 | Nov. 08, 1938 | E.C. Head | Machine for forming spiral bevel gear cutters |
