| Patents Granted on 1880-05-11 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| RE9,197 | May 11, 1880 | J.K. Lockwood | Circular saw | sawblades |
| 227,402 | May 11, 1880 | J.F. Wood | Treatment of emery-wheels | grinding wheels |
| 227,407 | May 11, 1880 | H.I. Berterman | Cutter-head | cutterheads |
| 227,441 | May 11, 1880 | C.M. Miller | Traction Engine | steam traction engines |
| 227,452 | May 11, 1880 | W. Steers | Bench-Plane | plane cutter adjustments |
| 227,460 | May 11, 1880 | J. Watt | Steam-Hammers | steam hammers |
| 227,465 | May 11, 1880 | O.E. Winger | Grinding-Mill | grist mills |
| 227,500 | May 11, 1880 | H. Dewey | Iron Planer Tool | metal planer tools |
| 227,508 | May 11, 1880 | P. Everitt | Screw-Stock | tap wrenches and die stocks |
| 227,517 | May 11, 1880 | E.F. Gordon | Steam-radiator | radiators |
| 227,566 | May 11, 1880 | E.W. Mills | Portable Engines | portable steam engines |
| 227,572 | May 11, 1880 | J.G. Peace | Felly-boring machine | wheelwright |
| 227,578 | May 11, 1880 | C.F. Reimann | Divider | dividers |
| 227,580 | May 11, 1880 | R. Richardi | Machine for making wooden trays | specialty woodworking machines |
| 227,582 | May 11, 1880 | W. Riley | Bench Vise | bench vises |
