| Patents Granted on 1880-04-06 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 226,149 | Apr. 06, 1880 | J.H. Alexander | Wrench | axle nut wrenches |
| 226,162 | Apr. 06, 1880 | S. Darling | Compensating Errors in Screw Dividing Engines | indexers and dividers |
| 226,190 | Apr. 06, 1880 | H.K. Porter | Bolt-cutter | bolt cutters |
| 226,246 | Apr. 06, 1880 | C.H. Reid | Lathe-chuck | wood lathe chucks |
| 226,273 | Apr. 06, 1880 | J.L. Perry, A. Bridgman | Wood-polishing machines | drum sanders |
| 226,291 | Apr. 06, 1880 | G.W. Dudley | Saw filing and setting machine | sharpening machines |
| 226,339 | Apr. 06, 1880 | J. Moffet | Monkey-Wrench | screw adjust wrenches |
| 226,350 | Apr. 06, 1880 | D.C. Prescott | Reciprocating-saw mill | reciprocating sawmills |
| 226,370 | Apr. 06, 1880 | A.L. Sweet | Drill Chuck | metal lathe chucks |
