| Patents Granted on 1873-04-22 |
Patents 1 -
15
of 15
      |
| Number | Date | Patentee | Title | Type |
| 137,999 | Apr. 22, 1873 | C.A. Blessing | Improvement in turning-lathes for wood | wood lathes |
| 138,005 | Apr. 22, 1873 | J.H. Coffin, G.S. Coffin | Improvement in machines for finishing slate-frames | specialty woodworking machines |
| 138,015 | Apr. 22, 1873 | J.W. Gheen | Improvement in molding-machines | molders |
| 138,066 | Apr. 22, 1873 | J. Braun | Improvement in nut-machines | |
| 138,067 | Apr. 22, 1873 | J. Braun | Improvement in machines for making machine-screws | |
| 138,103 | Apr. 22, 1873 | H.B. Smith | Improvement in scroll-saws | scrollsaws |
| 138,113 | Apr. 22, 1873 | W.F. Arnold | Improvement in Try Squares | try squares |
| 138,121 | Apr. 22, 1873 | O. Bonney, Jr. | Improvement in band sawing-machines | bandsaws |
| 138,125 | Apr. 22, 1873 | J.R. Shangle, F.E. Brown | Corn Shellers | miller |
| 138,139 | Apr. 22, 1873 | W.B. Duckworth | Improvement in clutches for machinery | metalworking machine mechanisms |
| 138,161 | Apr. 22, 1873 | A.H. Jarecki | Pipe-Tongs | pipe tongs |
| 138,166 | Apr. 22, 1873 | J. King | Improvement in grain-drills | crop planters |
| 138,176 | Apr. 22, 1873 | J. Miller | Processes for Casting Bearings on Shafting | foundry casting apparatus |
| 138,201 | Apr. 22, 1873 | J.J. Safely | Portable Punches | auxiliary wrenches |
| 138,206 | Apr. 22, 1873 | J.B. Smith, B.F. Smith | Improvement in saw-mill carriages | sawmill carriages |
