| All Patents in class 408/224 |
Patents 16 -
30
of 41
      |
| Number | Date | Patentee | Title | Type |
| 260,774 | Jul. 11, 1882 | H.A. Moyer | Hub-boring machine | wheelwright |
| 305,625 | Sep. 23, 1884 | T. Newey, Jr. | Auger Bit Without Gimlet Lead | auger bits |
| 332,308 | Dec. 15, 1885 | G.R. Valentine | Countersink | metalworking countersinks |
| 379,213 | Mar. 13, 1888 | E. Firth, I. Tompkins, A. Tompkins | Screw Tap | taps and dies |
| 390,080 | Sep. 25, 1888 | S. Hipkins, Jr. | Reaming Tool | reamers |
| 395,459 | Jan. 01, 1889 | J. Shields | Boring Tool | boring bars |
| 399,595 | Mar. 12, 1889 | F.T. Wyckoff | Auger-bit | auger bits |
| 467,067 | Jan. 12, 1892 | W. Vanderman | Combination Die Stock and Reamer | tap and die holders |
| 475,560 | May 24, 1892 | E.C. Heydenreich | Plug-Cutter | hollow bits |
| 606,319 | Jun. 28, 1898 | H.G. Watrous | Auger | auger bits |
| 952,916 | Mar. 22, 1910 | W.G. Lloyd | Reamer and Auger | tapered reamers |
| 1,047,466 | Dec. 17, 1912 | F.A. Wagner | Cutter Securing Means | metalworking countersinks |
| 1,070,425 | Aug. 19, 1913 | A.C. Darling, Jr. | Countersinking drill | countersinks |
| 1,076,188 | Oct. 21, 1913 | B. Borden | Thread-cutting tool | taps and dies |
| 1,158,532 | Nov. 02, 1915 | J. Moles | Commutator Turning Tool | commutator truing tools |
