| Patents Granted on 1878-05-07 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| RE8,211 | May 07, 1878 | H.G. Ashton | Improvement in Safety-Valve Attachment to Utilize Escape-Steam | steam safety valves |
| RE8,215 | May 07, 1878 | N. Spofford | Improvement in braces for bits | brace chucks |
| RE8,216 | May 07, 1878 | P.C. Wortman | Improvement in Feed-Water Heaters | feedwater apparatus |
| 203,253 | May 07, 1878 | J. Enright | Steam Boiler Furnace | stationary boilers |
| 203,261 | May 07, 1878 | L. Glynn | Pipe-Wrench | pipe wrenches |
| 203,262 | May 07, 1878 | G.S. Goodspeed | Wrench | ratchet wrenches |
| 203,272 | May 07, 1878 | H.W. Hill | Hog-Ringing Implement | hog ring |
| 203,320 | May 07, 1878 | G.E. Burt, E.A. Hildreth | Improvement in horse-powers | animal powered apparatus |
| 203,384 | May 07, 1878 | G.N. Stearns | Improvement in hollow augers | hollow bits |
| 203,402 | May 07, 1878 | C.L. Bellamy | Spinning-Top Like Hand Drill | hand drills |
| 203,429 | May 07, 1878 | J.B. Dougherty | Improvement in machines for cutting hoops from the log | hoop making machines |
| 203,436 | May 07, 1878 | J. Evans | Lathe Stone Chuck | stoneworking lathes |
| 203,467 | May 07, 1878 | W. Lamb | Improvement in log-carriage gears for saw-mills | sawmill carriages |
| 203,469 | May 07, 1878 | D. Lane | Improvement in saw-mill dogs | sawmill dogs |
| 203,470 | May 07, 1878 | F. Larson, F.D. Livermore | Improvement in sleigh-knees | sleighs |
