| Patents for Pratt & Whitney Co. |
Patents 31 -
45
of 260
      |
| Number | Date | Patentee | Title | Type |
| 305,234 | Sep. 16, 1884 | F.H. Richards | Gear Cutting Machine | gear making machines |
| 306,257 | Oct. 07, 1884 | M.C. Johnson | Cutting Blade for Lathe Tools | lathe tools |
| 319,618 | Jun. 09, 1885 | F.A. Pratt | Frame and carriage for machines | |
| 319,650 | Jun. 09, 1885 | A. Whitney | Lathe Head | metal lathes |
| 323,202 | Jul. 28, 1885 | F.A. Pratt | Milling-machine | |
| 323,208 | Jul. 28, 1885 | F.H. Richards | Planer Table Driving Mechanism | metal planers |
| 331,046 | Nov. 24, 1885 | J. Fitzgerald | Slide Rest | lathe tool holders and tool posts |
| 331,443 | Dec. 01, 1885 | F.H. Richards | Blank-feeding mechanism | |
| 336,024 | Feb. 09, 1886 | G.D. Tucker | Screw Threading Tool | taps and dies |
| 349,840 | Sep. 28, 1886 | F.N. Gardner | Drafting Compass | compasses |
| 354,737 | Dec. 21, 1886 | F.H. Richards | Lathe Head | metal lathes |
| 365,744 | Jun. 28, 1887 | J.W. Heyer | Drilling-machine | |
| 366,187 | Jul. 05, 1887 | F.H. Richards | Shearing mechanism | paper cutting machines |
| 376,838 | Jan. 24, 1888 | A. Whitney | Drilling Machine | center drilling machines |
| 385,543 | Jul. 03, 1888 | A. Burritt | Tap with Detachable Cutters | taps and dies |
