| Patents Granted on 1878-05-14 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 203,552 | May 14, 1878 | R. Naatz | Improvement in cutter-heads for frizzing-machines | cutterheads |
| 203,553 | May 14, 1878 | T. Northey | Improvement in double stuffing-boxes for steam-pumps | steam pumps |
| 203,564 | May 14, 1878 | J.A. Seaman | Improvement in stave-jointing machines | barrel making machines |
| 203,571 | May 14, 1878 | D.E. Whiton | Improvement in drill and lathe chuck attachments | metal lathe chucks |
| 203,578 | May 14, 1878 | W.F. Barnes, J. Barnes | Improvement in rotary cutters | cutters |
| 203,581 | May 14, 1878 | J.S. Birch | Wrench | quick adjust wrenches |
| 203,593 | May 14, 1878 | J. Corbin | Pipe-Tongs | pipe tongs |
| 203,616 | May 14, 1878 | L.A. Hays | Improvement in saw-filing machines | saw sharpening machines |
| 203,654 | May 14, 1878 | J.A. Seaman | Improvement in stave-jointing machines | barrel making machines |
| 203,691 | May 14, 1878 | J. Adt | Wire Cutting Machine | wire gauging and cutting machines |
| 203,692 | May 14, 1878 | J. Alexander | Improvement in drag-sawing machines | drag saws |
| 203,701 | May 14, 1878 | D.F. Brown, Sr. | Combined Vise, Wrench and Pincher | combination tools |
| 203,774 | May 14, 1878 | H.F. Read | Wrench Attachment | pipe jaw attachments for wrenches |
