| Patents Granted on 1897-04-13 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| D26,884 | Apr. 13, 1897 | J.T. Slocomb | Micrometer Gage Frame | micrometers |
| 580,387 | Apr. 13, 1897 | J.F. Steward, G.H. Ellis | Explosive Engine | oil engines |
| 580,412 | Apr. 13, 1897 | T.W. Leask, J. Leask | Wrench | quick adjust wrenches |
| 580,429 | Apr. 13, 1897 | F.E. Snyder | Wrench | pipe tongs |
| 580,432 | Apr. 13, 1897 | L.S. Starrett | Speed Indicator | wheel-based measurers |
| 580,440 | Apr. 13, 1897 | H.W. White | Lathe Tool | lathe tools |
| 580,444 | Apr. 13, 1897 | H.C. Baker | Gas Engine | internal combustion engine valves |
| 580,445 | Apr. 13, 1897 | F.H. Bates, F.G. Bates | Motor Engine | internal combustion engines |
| 580,446 | Apr. 13, 1897 | D. Best | Petroleum Engine | ignition systems |
| 580,489 | Apr. 13, 1897 | E.B. Hayes | Dowel-making machine | dowel making machines |
| 580,508 | Apr. 13, 1897 | D.H. Richardson, S.A. Richardson | Combined Saw Set, Gage, and Jointer | saw gauges |
| 580,531 | Apr. 13, 1897 | J.H. Reed | Machine for turning lasts, &c. | pattern lathes |
| 580,606 | Apr. 13, 1897 | W.S. Sherman | Tongue-and-groove machine | matchers |
| 580,629 | Apr. 13, 1897 | H. Vigneault | Power Hammer | power hammers |
| 580,685 | Apr. 13, 1897 | O.B. Hall | Pipe Wrench | pipe wrenches |
