| All Patents in class 408/213 |
Patents 61 -
75
of 81
      |
| Number | Date | Patentee | Title | Type |
| 781,652 | Feb. 07, 1905 | C.C. Hiatt | Auger-Bit | auger bits |
| 782,221 | Feb. 14, 1905 | P.J. Creeden | Auger-Bit | auger bits |
| 803,223 | Oct. 31, 1905 | T.F. Gaynor | Expansion-Auger | adjustable drill bits |
| 808,245 | Dec. 26, 1905 | J. Lund | Wood-Boring Implement | auger bits |
| 818,062 | Apr. 17, 1906 | S.H. Tucker | Expansible bit | adjustable drill bits |
| 825,479 | Jul. 10, 1906 | J.T. Parker | Adjustable Bit Attachment | drill accessories |
| 848,632 | Apr. 02, 1907 | G.T. Chafin | Bit | adjustable drill bits |
| 877,592 | Jan. 28, 1908 | W.G. Parry, P.J. Creedon | Head for Boring-Bits | hollow bits |
| 884,111 | Apr. 07, 1908 | O. Tack | Boring-Tool | adjustable drill bits |
| 931,593 | Aug. 17, 1909 | L.W. Garner | Expansible Boring-Bit | adjustable drill bits |
| 963,468 | Jul. 05, 1910 | E. Pastore | Expansible Bit | adjustable drill bits |
| 965,664 | Jul. 26, 1910 | T.E. Stevenson | Bung-Hole Borer/Reamer | tapered reamers |
| 967,055 | Aug. 09, 1910 | J.T. Pugh | Auger-Bit | auger bits |
| 970,789 | Sep. 20, 1910 | G.P. Butler | Expansible Bit | adjustable drill bits |
| 996,612 | Jul. 04, 1911 | J.W. Caldwell | Auger-Bit | auger bits |
