| Patents Granted on 1840-06-?? |
Patents 1 -
8
of 8
      |
| Number | Date | Patentee | Title | Type |
| NS-8 | Jun. 13, 1840 | R.H. Smith, T. Smith | Machine for blowing blacksmiths' bellows by water power | forge bellows |
| 1,647 | Jun. 20, 1840 | S.F. Morse | Electric telegraph | telegraphy apparatus |
| 1,648 | Jun. 20, 1840 | A. Crowell, W.A. Crowell | Construction of Churns | churns |
| 1,649 | Jun. 20, 1840 | A. Bailey | Mortising and tenoning machine | mortising machines |
| 1,652 | Jun. 27, 1840 | J. Hamilton | Pit-sawing and slitting machine for sawing logs into lumber and boards | reciprocating sawmills |
| 1,658 | Jun. 27, 1840 | Z. Parker, R. McKelvey | Improvement in Percussion and Reaction Water Wheels | water wheels |
| 1,659 | Jun. 27, 1840 | H.W. Hewet | Screw Wrench | nut wrenches |
| 1,663 | Jun. 27, 1840 | J. Hamilton | Machine for sawing or cutting snags | reciprocating saws |
