| All Patents in class 451/64 |
Patents 1 -
15
of 27
      |
| Number | Date | Patentee | Title | Type |
| 16,223 | Dec. 16, 1856 | E. Andrews | Improved machine for grinding saws | cutter grinding |
| 657,357 | Sep. 04, 1900 | J.L. Perry | Sandpapering-machine | sanding machines |
| 983,975 | Feb. 14, 1911 | W.L. Bryant | Multispindle grinding-machine | grinders |
| 1,026,389 | May 14, 1912 | E.J. McClellan, G.K. Garvin | Hole Grinding Machine | grinding machines |
| 1,445,875 | Feb. 20, 1923 | R.W. Ellingham, C.E. Van Norman | Grinding machine | vehicle mechanic |
| 1,662,821 | Mar. 20, 1928 | S. Einstein | Internal Grinder | grinding machines |
| 1,695,759 | Dec. 18, 1928 | P. Conradson | Grinding Machine | grinding machines |
| 1,779,823 | Oct. 28, 1930 | C.H. Norton | Automatic Cylindrical grinding machine | cylindrical grinders |
| 1,881,984 | Oct. 11, 1932 | C.E. Van Norman | Slide Mechanism for Precision Grinding Machines | grinding machines |
| 1,991,799 | Feb. 19, 1935 | C. Booth, S. Einstein | Grinding Machine | grinding machines |
| 2,042,257 | May 26, 1936 | C.W. Hopkins, R.E. Harrison | Machine Tool | grinding machines |
| 2,043,408 | Jun. 09, 1936 | E.F. Haas | Grinding Machine | grinding machines |
| 2,076,808 | Apr. 13, 1937 | W.L. Bryant | Grinding machines | grinders |
| 2,101,383 | Dec. 07, 1937 | H.H. Asbridge | Precision grinding machine | |
| 2,106,216 | Jan. 25, 1938 | A.M. Johnson | Honing machine | honing machines |
