| All Patents in class 451/48 |
Patents 1 -
10
of 22
      |
| Picture | Number | Date | Patentee | Title |
 | 10,017 | Sep. 13, 1853 | J.M. Smith | Improved cutter-head for molding machines |
 | 209,782 | Nov. 12, 1878 | J. Swan | Improvement in the Manufacture of Auger-Bits |
| | 220,911 | Oct. 28, 1879 | L.D. Cogswell | Grinder |
 | 492,095 | Feb. 21, 1893 | P. Medart | Machine for grinding pulley-shafts and their couplings |
 | 1,079,420 | Nov. 25, 1913 | S. MacKay | Method of Adjusting Rotary Cutters |
| | 1,271,495 | Jul. 02, 1918 | F.A. Ward | Method for Grinding Spline Shafts and Other Interrupted Cycindrical Bodies |
| | 1,536,736 | May 05, 1925 | A.W. Erdman, P.F. Vokal | Process of Making Milling Cutters |
| | 1,662,078 | Mar. 13, 1928 | O. Severson | Method of and Machine for Grinding Fine-Tooth Hobs |
| | 2,142,285 | Jan. 03, 1939 | H. Pelphrey | Hob and Method of Manufacture |
 | 2,269,556 | Jan. 13, 1942 | J.A. St. Clair | Method for grinding saws |
