| All Patents in class 408/180 |
Patents 1 -
15
of 23
      |
| Number | Date | Patentee | Title | Type |
| 60,430 | Dec. 11, 1866 | J.G. Schmidt | Improvement in machines for cutting bungs for barrels | cooper |
| 150,687 | May 12, 1874 | H. Millward, J.L. Hall | Screw Cutting Machines | screwcutting lathes |
| 164,953 | Jun. 29, 1875 | F. Willig | Improvement in Expansible Bits | adjustable drill bits |
| 186,890 | Jan. 30, 1877 | A.J. Smart | Improvement in screw-cutting dies | taps and dies |
| 521,430 | Jun. 12, 1894 | A.A. Bourgeous | Boring-bit | drill bits |
| 881,449 | Mar. 10, 1908 | G.A. Smith | Thread Cutting Device | alligator wrenches |
| 1,018,393 | Feb. 20, 1912 | A.B. Landis | Cutter-head | metal threading machines |
| 1,074,466 | Sep. 30, 1913 | C.C. Russell | Screw-plate | tap and die holders |
| 1,130,542 | Mar. 02, 1915 | W. Russell | Screw-cutting die | taps and dies |
| 1,327,007 | Jan. 06, 1920 | G.A. Anderson | Cutter-head | pipe threading machines |
| 1,943,644 | Jan. 16, 1934 | W.W. Vosper | Tool Carrier | pipe threading machines |
| 2,034,453 | Mar. 17, 1936 | H. Wiener | Tool Holder | metalworking machine tool holders |
| 2,093,743 | Sep. 21, 1937 | E.C. Steiner | Boring Head | boring heads |
| 2,269,320 | Jan. 06, 1942 | W.C. Rosborough | Retractable Tool Holder | drilling and boring tool holders |
| 2,458,753 | Jan. 11, 1949 | F.C. Wallace | Boring Head | boring heads |
