| Patents Granted on 1880-05-18 |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 227,622 | May 18, 1880 | W.W. Griscom | Electro-Magnetic Motor | DC motors |
| 227,623 | May 18, 1880 | W.W. Griscom | Electro-Magnetic Motor | DC motors |
| 227,679 | May 18, 1880 | T.A. Edison | Phonograph | |
| 227,686 | May 18, 1880 | J. Goodrich | Tool For Grasping and Holding Articles | hand vises |
| 227,697 | May 18, 1880 | T.C. Massey | Kerosene-can spout | oil cans |
| 227,711 | May 18, 1880 | J.R. Allgire | Machine for cutting tray-blanks | specialty woodworking machines |
| 227,757 | May 18, 1880 | K. Freeman | Fence-post-boring machine | wood drilling and boring |
| 227,765 | May 18, 1880 | A.Y. Gray, L. Gray | Wrench | ratchet wrenches |
| 227,768 | May 18, 1880 | G.W. Griffiths | Pipe-Wrench | alligator wrenches |
| 227,773 | May 18, 1880 | D. Hartmann | Combination Tool | combination tools |
| 227,815 | May 18, 1880 | E. Morris | Saw | crosscut saw teeth |
| 227,845 | May 18, 1880 | W. Sawyer | Dynamo Electric Machine | DC motors |
