| Patents Granted on 1891-04-14 |
Patents 1 -
15
of 24
      |
| Number | Date | Patentee | Title | Type |
| 450,141 | Apr. 14, 1891 | J.A. Cook | Telescopic Rule | rules |
| 450,151 | Apr. 14, 1891 | J. Harrold | Governor for steam-engines | steam engine governors |
| 450,154 | Apr. 14, 1891 | J.J. Hogan | Improvements in Wrenches For Internal Nipples | wrenches |
| 450,214 | Apr. 14, 1891 | J.H. Crowell, T.H. Blair | Camera | cameras |
| 450,337 | Apr. 14, 1891 | L.E. Paine | Combined sandpapering and friezing machine | sanding machines |
| 450,338 | Apr. 14, 1891 | C. Reed | Boring and mortising implement | portable timber mortisers |
| 450,367 | Apr. 14, 1891 | R. Eickemeyer | Insulation of armatures for dynamo-electric machines | |
| 450,372 | Apr. 14, 1891 | O.M. Morse | Dust-collector | waste collection mechanisms |
| 450,381 | Apr. 14, 1891 | J. Smith | Improvements in Apparatus For Withdrawing Bungs or Shives | wrenches |
| 450,396 | Apr. 14, 1891 | A.B. Cameron | Wood Channeling and Grooving Machine | other wood sawing machines |
| 450,398 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machine for Finishing the Ends of Cylinders of Steam Engines | metalworking machines |
| 450,399 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machine for Finishing Side Flanges of Cylinders of Steam Engines | steam engine cylinders |
| 450,400 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machine for Finishing the Ends of Valve Boxes of Steam Engine Cylinders | metalworking machines |
| 450,402 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machines for Boring the Valve-Boxes of Cylinders of Steam Engines | metalworking machines |
| 450,403 | Apr. 14, 1891 | E.A. Corliss, administratrix, G.H. Corliss, deceased (estate of) | Machine for Fitting the Exhaust Valve Boxes of Steam Engines | metalworking machines |
