| All Patents in class 408/195 |
Patents 61 -
70
of 70
      |
| Number | Date | Patentee | Title | Type |
| 857,647 | Jun. 25, 1907 | G.T. Miller | Gasket-Cutter | washer cutters |
| 860,020 | Jul. 16, 1907 | J.H. Dearholt | Boring-Tool or Auger | adjustable drill bits |
| 879,309 | Feb. 18, 1908 | E. Pastore | Expansible bit | adjustable drill 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 |
| 970,789 | Sep. 20, 1910 | G.P. Butler | Expansible Bit | adjustable drill bits |
| 1,056,670 | Mar. 18, 1913 | L.S. Hayden | Expansion Bit | drill bits |
| 1,379,332 | May 24, 1921 | G.P. Butler | Expansion-bit | adjustable drill bits |
| 1,545,030 | Jul. 07, 1925 | C.A. Best | Boring tool | twist drill bits |
