| All Patents in class 408/56 |
Patents 1 -
15
of 27
      |
| Number | Date | Patentee | Title | Type |
| 9,398X | Feb. 13, 1836 | W. Keane | Improvement in Machines for Cutting Wood and Other Screws | screw machines |
| RE2 | Apr. 16, 1838 | W. Keane | Improvement in Machines for Cutting Wood and Other Screws | screw machines |
| 79,608 | Jul. 07, 1868 | S. Stanton | Sawing Stone | stone cutting machines |
| 157,700 | Dec. 15, 1874 | C. Sellers | Machines for Threading Bolts | |
| 342,688 | May 25, 1886 | J. Ernst | Boring-machine | portable timber borers |
| 439,122 | Oct. 28, 1890 | L.B. Curtis | Pipe and Bolt Threading Attachment for Lathes | metal lathe accessories and attachments |
| 467,937 | Feb. 02, 1892 | E.E. Winkley, E.H. Kavanagh | Stone Working Machine | stoneworking tools |
| 498,811 | Jun. 06, 1893 | P. O'Donoghue, S.P. Orth | Device for Cutting Pearl, &c. | button making machinery |
| 567,271 | Sep. 08, 1896 | J.S. Howard, W.B. Howard, Jr. | Auger Bit - Lubricating | auger bits |
| 854,144 | May 21, 1907 | P. Broadbooks | Drill Bit | metalworking twist drills |
| 925,181 | Jun. 15, 1909 | L.F. Hart | Screw Cutting Device | tap and die holders |
| 1,090,299 | Mar. 17, 1914 | A.M. Harrington, R.F. Scott | Bolt-cutting machine | nut or bolt making machines |
| 1,442,149 | Jan. 16, 1923 | H.J. Hjorth | Drilling Machine | drill presses |
| 1,658,808 | Feb. 14, 1928 | V. Julien, D.C. Klausmeyer | Drill Column with Coaxial Power Line | metalworking machine mechanisms |
| 1,783,019 | Nov. 25, 1930 | A.M. Johnson | Honing machine | honing machines |
