| All Patents in class 408/186 |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 14,105 | Jan. 15, 1856 | H. McGrath | Bit for boring fellies and tenoning spokes | wheelwright |
| 117,786 | Aug. 08, 1871 | D.S. Kniffen | Improvement in Plug-Cutters for Wood-Workers | hollow bits |
| 134,777 | Jan. 14, 1873 | W.E. Ward | Screw Cutting Dies | taps and dies |
| 279,204 | Jun. 12, 1883 | J. Swan | Adjustable Auger | adjustable drill bits |
| 328,320 | Oct. 13, 1885 | F. Leu | Countersink | countersinks |
| 412,952 | Oct. 15, 1889 | C. Elterich | Tap and holder therefor | taps and dies |
| 418,903 | Jan. 07, 1890 | M. Weiss | Hollow Mill | lathe tools |
| 456,462 | Jul. 21, 1891 | B.B. Allen | Reamer | reamers |
| 559,372 | May 05, 1896 | C. Elterich | Tap | taps and dies |
| 637,133 | Nov. 14, 1899 | H. Kupsch | Open Die Head | tap and die holders |
| 649,733 | May 15, 1900 | J.P. Lavigne | Die Head | |
| 722,481 | Mar. 10, 1903 | J.C. Beyer | Extension Boring-Bit | adjustable drill bits |
| 737,204 | Aug. 25, 1903 | E.W. Bullard | Screw Cutting Device | metal lathe accessories and attachments |
| 743,335 | Nov. 03, 1903 | J.J. Rogers | Roger's Belt Punch | |
| 785,351 | Mar. 21, 1905 | W.W. Doolittle | Tool Holder | drilling and boring tool holders |
