| Patents Granted on 1881-01-11 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 236,401 | Jan. 11, 1881 | D. Robertson, J.R. Adams | Detachable Lip for Augers | auger bits |
| 236,420 | Jan. 11, 1881 | J.W. Doubleday | Punch | washer cutters |
| 236,422 | Jan. 11, 1881 | R. Bickemeyer | Lathe for turning irregular forms | pattern lathes |
| 236,469 | Jan. 11, 1881 | C.D. Waters | Square & Bevel Suface Gage | surface gauges |
| 236,474 | Jan. 11, 1881 | T.R. Almond | Coupling for shafting | industrial machine shaft couplings |
| 236,475 | Jan. 11, 1881 | J.A. Ambler, A.C. Ambler | Mechanism for finishing the bottoms of boots and shoes | cobbler |
| 236,564 | Jan. 11, 1881 | R. Eickemeyer | Harvesting Machine | |
| 236,565 | Jan. 11, 1881 | J.H. Elward | Traction Engine | steam traction engines |
| 236,620 | Jan. 11, 1881 | W.J. Perkins | Shingle-sawing machine | shingle machines |
| 236,621 | Jan. 11, 1881 | J.W. Pettengill | Excelsior machine | excelsior machines |
| 236,636 | Jan. 11, 1881 | S.J. Shimer, G.G. Shimer | Cutter-head | cutterheads |
