| All Patents in class 408/195 |
Patents 31 -
45
of 70
      |
| Number | Date | Patentee | Title | Type |
| 210,553 | Dec. 03, 1878 | A.J. Palmer | Brace for cutting leather washers | braces |
| 217,505 | Jul. 15, 1879 | R.J. Bartley | Improvement in Washer-Cutters | washer cutters |
| 221,391 | Nov. 11, 1879 | C. Brinton | Improvement in augers | adjustable drill bits |
| 241,920 | May 24, 1881 | J.W. Brittin | Bit-stock | braces |
| 256,979 | Apr. 25, 1882 | J.W. Cooper | Washer Cutter and Adjustable Bit | washer cutters |
| 269,406 | Dec. 19, 1882 | P.A. Gladwin | Auger | adjustable drill bits |
| 279,204 | Jun. 12, 1883 | J. Swan | Adjustable Auger | adjustable drill bits |
| 286,610 | Oct. 16, 1883 | I.W. Heysinger | Bit-brace and washer cutter | braces |
| 289,126 | Nov. 27, 1883 | G. Nichols | Expansion-Bit | adjustable drill bits |
| 290,882 | Dec. 25, 1883 | J.W. Hicks | Machine for Cutting Circles | wood drilling and boring |
| 296,219 | Apr. 01, 1884 | J. Rath | Washer-cutter | washer cutters |
| 313,735 | Mar. 10, 1885 | G.H. Hill | Expansible bit | adjustable drill bits |
| 360,990 | Apr. 12, 1887 | C.E. Billings | Expansive bit | adjustable drill bits |
| 415,988 | Nov. 26, 1889 | W.S. Whiting | Extension-bit | adjustable drill bits |
| 457,227 | Aug. 04, 1891 | J.L. Sigsbee | Device for Cutting Disks and Washers | washer cutters |
