| Patents for Louis W. Southgate |
Patents 1 -
15
of 24
      |
| Number | Date | Patentee | Title | Type |
| 480,907 | Aug. 16, 1892 | J. Kindred | Drilling-machine | drill presses |
| 509,408 | Nov. 28, 1893 | R.T. Torkelson | Pipe Wrench | pipe wrenches |
| 536,301 | Mar. 26, 1895 | J.C. Speirs | Method of Making Wrenches | wrench handle components |
| 564,816 | Jul. 28, 1896 | J.V. Chamberlin, R. Aldrich | Wrench | quick adjust wrenches |
| 598,967 | Feb. 15, 1898 | A. Whitcomb | Driving mechanism for planing-machines | metal planers |
| 637,484 | Nov. 21, 1899 | A. Plant | Wrench Handle | wrench handle components |
| 639,785 | Dec. 26, 1899 | J.C. Speirs | Pipe Wrench | pipe wrenches |
| 640,610 | Jan. 02, 1900 | C.E. Williams | Wrench | quick adjust wrenches |
| 660,249 | Oct. 23, 1900 | A.J. Gifford | Drilling-machine | drill presses |
| 669,721 | Mar. 12, 1901 | W.H. Bruce | Pliers or Pipe Tongs | pliers |
| 728,279 | May 19, 1903 | A.E. Newton | Change Gearing for Lathes | industrial machine gearing |
| 895,102 | Aug. 04, 1908 | A.E. Newton | Power-transmitting mechanism | radial drill presses |
| 895,103 | Aug. 04, 1908 | A.E. Newton | Gearing | drill presses |
| 895,104 | Aug. 04, 1908 | A.E. Newton | Gearing | radial drill presses |
| 895,106 | Aug. 04, 1908 | A.E. Newton | Change-speed gearing for engine-lathes | engine lathes |
