| Patents Granted on 1879-05-20 |
Patents 1 -
7
of 7
      |
| Number | Date | Patentee | Title | Type |
| 215,456 | May 20, 1879 | H.P. Hood | Wrench | screw adjust wrenches |
| 215,479 | May 20, 1879 | N.R. Pratt | Carriage-Wheel Wrench | axle nut wrenches that lock nut to wheel hub |
| 215,505 | May 20, 1879 | J.W. Bicknell, C. Carr | Improvement in machines for uniting paper | |
| 215,512 | May 20, 1879 | J. Dobbins | Improvement in machines for planing and pointing hoops | hoop making machines |
| 215,514 | May 20, 1879 | J.L. Ferguson | Improvement in Vises for Holding Marble or Stone While Being Cut | bench vises |
| 215,594 | May 20, 1879 | W. Enoch | Gauge lathe | wood lathes |
| 215,698 | May 20, 1879 | A.S. Walbridge | Improvement in hand and horse power fire-engines | animal powered apparatus |
