| Patents Granted on 1831-05-?? |
Patents 1 -
15
of 21
      |
| Number | Date | Patentee | Title | Type |
| 6,532X | May 02, 1831 | J.K. Jencks | Distilling | |
| 6,533X | May 02, 1831 | R. Meriam | Set machine for filletting, cutting, or pricking cards | |
| 6,534X | May 03, 1831 | J.F. Anderson | Grist mill | grist mills |
| 6,535X | May 03, 1831 | P.C. Curtis | Steam engine boiler | stationary boilers |
| 6,536X | May 03, 1831 | M. Hurd | Machine for grinding bark | bark processing machines |
| 6,537X | May 03, 1831 | U.B. Lange | Stove for stone coal | stoves |
| 6,538X | May 03, 1831 | J. Perkins | Soda water apparatus | |
| 6,539X | May 03, 1831 | W. Manning | Machine for cutting grass and grain | |
| 6,540X | May 04, 1831 | T. Hewitt, Jr. | Manufacturing candles, mould, called the candledrawer and endless wick nipper | chandler |
| 6,541X | May 05, 1831 | S. Andrews | Generating gas by means of a spirit lamp | household tools |
| 6,542X | May 05, 1831 | J. Baker | Medicine | |
| 6,543X | May 05, 1831 | J. Crail | Churn | churns |
| 6,544X | May 05, 1831 | J.F. Nunns | Piano forte action | music instrument maker |
| 6,545X | May 05, 1831 | C.A. Ore | Manufacturing boots and shoes | |
| 6,546X | May 07, 1831 | W.E. Arnold | Applying Horse Power to Mechanical Purposes | animal powered apparatus |
