| All Patents in class 408/16 |
Patents 1 -
15
of 61
      |
| Number | Date | Patentee | Title | Type |
| 88,821 | Apr. 13, 1869 | M. Sweet | Improvement in boring-machines | wood drilling and boring |
| 111,248 | Jan. 24, 1871 | S.W. Putnam, Jr. | Improvement in machines for cutting screw-threads on bolts | metal threading machines |
| 157,034 | Nov. 17, 1874 | W.D. Squires | Machines for Enlarging the Bore of Gun-Barrels | horizontal boring mills |
| 289,170 | Nov. 27, 1883 | M. Sweet | Wood-boring machine | wood drilling and boring |
| 300,038 | Jun. 10, 1884 | A.B. Bean | Index-gage for drilling-machines | drill presses |
| 341,378 | May 04, 1886 | W.E. Gwyer | Spirit Level for Boring Bits | levels |
| 342,285 | May 18, 1886 | F.W. Gesswein, G. Crowell | Machine for Boring Brushes | brush making machinery |
| 352,721 | Nov. 16, 1886 | J.A. Traut | Stanley No 44 Bit and Square Level | levels |
| 354,073 | Dec. 07, 1886 | J. Swan | Boring-machine | portable timber borers |
| 371,294 | Oct. 11, 1887 | G. Woods | Plumb Level for Boring Bits | levels |
| 423,110 | Mar. 11, 1890 | W.C. Aycock, J.A. Aycock | Blind-stile-boring machine | windowblind machines |
| 741,087 | Oct. 13, 1903 | C.B. Weidlog | Indicator for Boring Machines | measuring tools |
| 766,723 | Aug. 02, 1904 | C.C. Newton | Drilling and Tapping Machine | tapping machines |
| 1,088,965 | Mar. 03, 1914 | E.P. Bullard, Jr. | Adjustable Observation-Stop | metalworking machine mechanisms |
| 1,217,572 | Feb. 27, 1917 | C.C. Craley | Metal Working Apparatus | drill press accessories |
