All Patents in class 409/231 |
Patents 1 -
10
of 50
      |
Picture | Number | Date | Patentee | Title |
 | 110,407 | Dec. 20, 1870 | C. Van Haagen | Improvement in grooving-tools |
| 633,108 | Sep. 12, 1899 | W.B. Pearson | Machine for Turning Regular Hexagons |
| 642,712 | Feb. 06, 1900 | J. Parker | High Speed Attachment for Milling Machines |
 | 729,896 | Jun. 02, 1903 | V. Royle | Cutter-head for routing-machines |
 | 1,013,847 | Jan. 02, 1912 | D.B. Salstrom | Spindle-bearing |
 | 1,188,339 | Jun. 20, 1916 | J.B. Sinderson | Milling-machine |
 | 1,300,163 | Apr. 08, 1919 | W.F. Groene | Means for attaching tools to spindles |
| 1,492,545 | Apr. 29, 1924 | S. Einstein | Cone Drive Miller Having Box Type Over-Arm |
| 1,688,534 | Oct. 23, 1928 | S. Einstein | Vaiable Speed Spindle Drive |
| 1,729,286 | Sep. 24, 1929 | J.B. Elfring | Adjustable Spacing Collar for Milling Cutters |