| Patents for Pratt & Whitney Co. |
Patents 76 -
90
of 261
      |
| Number | Date | Patentee | Title | Type |
| 443,933 | Dec. 30, 1890 | F.H. Richards, C.H. Cooley | Grain-weigher | |
| 446,898 | Feb. 24, 1891 | C.W. Sponsel | Rifling Machine | rifling machines |
| 447,719 | Mar. 03, 1891 | F.H. Richards | Register for Grain Weighers | grain scales |
| 448,525 | Mar. 17, 1891 | D. Kennedy | Punching Machine | punch presses |
| 482,212 | Sep. 06, 1892 | W.W. Tucker | Grinding Fixture | grinding fixtures |
| 496,828 | May 02, 1893 | G. Hays | Ball Bearing for Lathe Spindles | metalworking machine bearings |
| 504,172 | Aug. 29, 1893 | J. Johnson, F.A. Pratt | Roll Grooving Machine | metal planers |
| 506,620 | Oct. 10, 1893 | E.W. Bemis | Milling Machine | milling machines |
| 515,292 | Feb. 20, 1894 | A.H. Kent | Tap Wrench | tap wrenches and die stocks |
| 531,203 | Dec. 18, 1894 | C.W. MacCord | Lathe for Turning Elliptical Forms | form producing lathes |
| 533,978 | Feb. 12, 1895 | J. Johnston, A. Whitney | Milling-machine | bicycle machinery |
| 534,008 | Feb. 12, 1895 | F.A. Pratt | Drop Hammer | drop hammers |
| 534,220 | Feb. 12, 1895 | E.D. Clark, Administrator of the Estate, A.H. Kent, deceased (Estate of) | Milling Tool | milling machine cutters |
| 558,497 | Apr. 21, 1896 | A.W. Kinney | Drilling Machine | multiple spindle drill presses |
| 560,171 | May 12, 1896 | A.J. Oehring | Multiple drill | multiple spindle drill presses |
