| All Patents in class 470/198 |
Patents 16 -
30
of 42
      |
| Number | Date | Patentee | Title | Type |
| 574,216 | Dec. 29, 1896 | S.E. Pranke | Combination Tap and Die | taps and dies |
| 586,419 | Jul. 13, 1897 | A. Collet | Tap for Cutting Wood Threads | drill bits |
| 588,056 | Aug. 10, 1897 | F.G. Echols | Screw Cutting Tool | |
| 679,927 | Aug. 06, 1901 | W.A. Warman | Method of Making Screws | |
| 702,011 | Jun. 10, 1902 | J. Kinvall | Device for Removing Broken Taps | tap extractors |
| 832,380 | Oct. 02, 1906 | J. Hartness | Tap and Process of Making the Same | taps and dies |
| 992,946 | May 23, 1911 | D.W. Edwards | Wood-Tap | wood threading machines |
| 1,127,754 | Feb. 09, 1915 | J.J. Grant | Nut-machine | nut or bolt making machines |
| 1,395,252 | Nov. 01, 1921 | E.E. Beck | Thread Cutting Die | taps and dies |
| 1,538,670 | May 19, 1925 | J.W. Stanley | Tool Holder | metalworking machine tool holders |
| 1,635,179 | Jul. 12, 1927 | R.E. Flanders | Threading Tool | taps and dies |
| 1,694,229 | Dec. 04, 1928 | J.P. Nestor | Thread restorer | |
| 1,702,810 | Feb. 19, 1929 | J.F. Buhr | Tapping Chuck | drill press chucks |
| 1,775,992 | Sep. 16, 1930 | G.W. Emrick | Chuck device | tapping machines |
| 1,857,012 | May 03, 1932 | M.H. Corley | Tap holder | tapping heads and chucks |
