| Patents Granted on 1838-07-?? |
Patents 1 -
6
of 6
      |
| Number | Date | Patentee | Title | Type |
| 830 | Jul. 09, 1838 | T. Keane, J. Keane | Machine for cutting wood-screws | screw machines |
| 838 | Jul. 12, 1838 | W. Buckminster | Improvement in flexible horse hay-rakes | hay or straw rakes |
| 840 | Jul. 16, 1838 | J.W. Webb | Corn Shelling | miller |
| 841 | Jul. 16, 1838 | E. Bunce | Improvement in the Machine for Planting Corn and Other Seeds | corn planters |
| 851 | Jul. 24, 1838 | R.N. Watrous, E. L'Hommedieu | Machinery for manufacturing double-twist screw-augers | tool making machines |
| 860 | Jul. 28, 1838 | J. Wyman | Machine for jointing staves for barrels, casks, &c. | barrel making machines |
