| All Patents in class 409/903 |
Patents 1 -
15
of 37
      |
| Number | Date | Patentee | Title | Type |
| 364,353 | Jun. 07, 1887 | R. Kampfe | Machinery for Grinding Cutlery | glass grinding machines |
| 445,983 | Feb. 10, 1891 | W.B. Dwight | Machine for Cutting or Slicing Minerals | stone cutting machines |
| 489,224 | Jan. 03, 1893 | W.W. Doolittle | Tapping-machine | tapping machines |
| 508,533 | Nov. 14, 1893 | J.N. Skinner | Face-plate jaw | metal lathe chucks |
| 540,074 | May 28, 1895 | H.G. Shepard | Machine for recessing wheel-rims | wheelwright |
| 540,630 | Jun. 11, 1895 | W.P. Brett | Drilling Machine | multiple spindle drilling heads |
| 564,296 | Jul. 21, 1896 | O.S. Walker | Magnetic chuck | magnetic chucks |
| 651,908 | Jun. 19, 1900 | O.S. Walker | Magnetic Chuck | magnetic chucks |
| 848,192 | Mar. 26, 1907 | H.E. Morton, M. Morton | Apparatus for Holding Connecting Rod Brasses for Locomotives, &c. | metal shaper accessories |
| 1,079,546 | Nov. 25, 1913 | A.W. Faxon, L.W. Downes | Magnetic Chuck | grinding attachments |
| 1,222,052 | Apr. 10, 1917 | O.S. Walker | magnetic chuck | magnetic chucks |
| 1,280,284 | Oct. 01, 1918 | W.E. Nickerson | Blade Holding Mechanism for Blade Sharpening Machines | sharpening machines |
| 1,471,624 | Oct. 23, 1923 | H.E. Morton | Magnetic Chuck | chucks |
| 1,508,748 | Sep. 16, 1924 | O.S. Cook, H.A. Gale | Machine for Making Box Shooks | box making machines |
| 1,560,487 | Nov. 03, 1925 | A.A. Shafer | Automatic Screw Threading Machine | metal threading machines |
