| All Patents in class 451/420 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 110,777 | Jan. 03, 1871 | T.H. Mueller | Improvement in machines for cutting the ends of wooden pencils | pencil making machines |
| 142,936 | Sep. 16, 1873 | S.W. Nelson | Improvement in planing-machines | wood planers |
| 188,046 | Mar. 06, 1877 | F. Godeau | Improvement in machines for planing wood | wood planers |
| 276,197 | Apr. 24, 1883 | J.W. Smith | Band sawing machine | bandsaws |
| 285,931 | Oct. 02, 1883 | F.H. Richards | Lathe for irregular forms | pattern lathes |
| 312,140 | Feb. 10, 1885 | E. May | Machine for Turning Pearl Buttons | button making machinery |
| 450,057 | Apr. 07, 1891 | J. Cléret | Apparatus for Cutting Pearl Buttons | button making machinery |
| 773,495 | Oct. 25, 1904 | E. Harrold, C.G. Wilderson | Attachment for sharpening bandsaws | cutter grinding |
| 993,367 | May 30, 1911 | W. Harper | Planer-knife jointer | woodworking machine sharpening mechanisms |
| 1,261,136 | Apr. 02, 1918 | A. Krauth | Sharpening Machine | |
| 1,658,185 | Feb. 07, 1928 | R.L. Carter | Tool-grinding mechanism | woodworking machine sharpening mechanisms |
| 2,249,743 | Jul. 22, 1941 | E.J. Bucknam | Saw sharpening apparatus | saw sharpening machines |
