| All Patents in class 408/56 |
Patents 1 -
10
of 27
      |
| Picture | Number | Date | Patentee | Title |
 | 9,398X | Feb. 13, 1836 | W. Keane | Improvement in Machines for Cutting Wood and Other Screws |
 | RE2 | Apr. 16, 1838 | W. Keane | Improvement in Machines for Cutting Wood and Other Screws |
| | 79,608 | Jul. 07, 1868 | S. Stanton | Sawing Stone |
| | 157,700 | Dec. 15, 1874 | C. Sellers | Machines for Threading Bolts |
 | 342,688 | May 25, 1886 | J. Ernst | Boring-machine |
| | 439,122 | Oct. 28, 1890 | L.B. Curtis | Pipe and Bolt Threading Attachment for Lathes |
| | 467,937 | Feb. 02, 1892 | E.E. Winkley, E.H. Kavanagh | Stone Working Machine |
| | 498,811 | Jun. 06, 1893 | P. O'Donoghue, S.P. Orth | Device for Cutting Pearl, &c. |
 | 567,271 | Sep. 08, 1896 | J.S. Howard, W.B. Howard, Jr. | Auger Bit - Lubricating |
 | 854,144 | May 21, 1907 | P. Broadbooks | Drill Bit |
