| All Patents in class 451/11 |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 333,478 | Dec. 29, 1885 | E.H. Parks | Grinding Machine | cylindrical grinders |
| 640,669 | Jan. 02, 1900 | A.B. Landis | Grinding-machine | grinders |
| 654,314 | Jul. 24, 1900 | A.B. Landis | Grinding-machine | grinders |
| 879,276 | Feb. 18, 1908 | A.B. Landis | Grinding-machine | grinders |
| 925,867 | Jun. 22, 1909 | W.L. Bryant | Multispindle metal-grinding machine | grinders |
| 1,877,500 | Sep. 13, 1932 | H.R. Isler, S. Einstein | Hydraulic Grinder | grinding machines |
| 1,881,984 | Oct. 11, 1932 | C.E. Van Norman | Slide Mechanism for Precision Grinding Machines | grinding machines |
| 1,891,777 | Dec. 20, 1932 | A.G. Plimmer | Grinding Machine | grinding machines |
| 1,918,147 | Jul. 11, 1933 | B.F. Stowell | Carriage positioning mechanism for grinding machines | grinders |
| 1,965,234 | Jul. 03, 1934 | F.S. Haas | Grinding Machine | grinding machines |
| 1,996,467 | Apr. 02, 1935 | H. Ernst | Electromagnetic Hydraulic Control | hydraulic apparatus |
| 2,263,404 | Nov. 18, 1941 | O.W. Barker, J.B. Armitage | Boring and Milling Machine | milling machines |
| 3,023,645 | Mar. 06, 1962 | H. Mueck, W.J. Craven | Apparatus for Producing Saw Blabes | making sawblades |
| 3,056,240 | Oct. 02, 1962 | R.G. Wise, J.M. Morgan, Jr. | Automatic Grinding Machine | cylindrical grinders |
| 3,056,243 | Oct. 02, 1962 | J.H. Flanders | Tangential Grinding | cylindrical grinders |
