| All Patents in class 408/16 |
Patents 1 -
10
of 65
      |
| Picture | Number | Date | Patentee | Title |
 | 88,821 | Apr. 13, 1869 | M. Sweet | Improvement in boring-machines |
 | 111,248 | Jan. 24, 1871 | S.W. Putnam, Jr. | Improvement in machines for cutting screw-threads on bolts |
| | 157,034 | Nov. 17, 1874 | W.D. Squires | Machines for Enlarging the Bore of Gun-Barrels |
 | 289,170 | Nov. 27, 1883 | M. Sweet | Wood-boring machine |
 | 300,038 | Jun. 10, 1884 | A.B. Bean | Index-gage for drilling-machines |
 | 341,378 | May 04, 1886 | W.E. Gwyer | Spirit Level for Boring Bits |
| | 342,285 | May 18, 1886 | F.W. Gesswein, G. Crowell | Machine for Boring Brushes |
 | 352,721 | Nov. 16, 1886 | J.A. Traut | Stanley No 44 Bit and Square Level |
 | 354,073 | Dec. 07, 1886 | J. Swan | Boring-machine |
 | 371,294 | Oct. 11, 1887 | G. Woods | Plumb Level for Boring Bits |
