| Patents Granted on 1877-05-?? |
Patents 1 -
15
of 78
      |
| Number | Date | Patentee | Title | Type |
| CA-7,419 | May 01, 1877 | S. Tilton | Improvements in Calf Muzzles | animal weaners |
| RE7,650 | May 01, 1877 | A.H. Jarecki | Pipe-Tongs | pipe tongs |
| 190,119 | May 01, 1877 | B.L. Budd | Improvement in Screw-Drivers | screwdrivers |
| 190,137 | May 01, 1877 | G. Harman | Carriers for Lathe Work | lathe dogs |
| 190,142 | May 01, 1877 | J.A. House | Art of manufacturing saw blades | making sawblades |
| 190,193 | May 01, 1877 | J.A. Caldwell | Coffee Roaster | coffee roasters |
| 190,275 | May 01, 1877 | O.S. French, D. June, R. Brayton | Improvement in Spark-Arresters | steam spark arresters |
| 190,330 | May 01, 1877 | A.H. Jarecki | Pipe-Tongs | pipe tongs |
| 190,334 | May 01, 1877 | A. Jungclas | Coffee Roaster | coffee roasters |
| RE7,661 | May 08, 1877 | J. Gates | Improvement in lubricators | lubricators |
| RE7,662 | May 08, 1877 | J. Gates | Improvement in lubricators | lubricators |
| RE7,673 | May 08, 1877 | J. Old | Pipe-Coupling | auxiliary wrenches |
| 190,411 | May 08, 1877 | G.B. Brayton | Piston for Air and Gas Engines | pistons |
| 190,441 | May 08, 1877 | W.J. Liddell | Improvement in steam-engines | steam engines |
| 190,447 | May 08, 1877 | J. Putnam | Scale Measure | rule graduations |
