| Patents Granted on 1804-05-?? |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 549X | May 01, 1804 | T. Langstroth | Paper Mill | paper making machines |
| 550X | May 01, 1804 | J. Stickney | Pump | plumber |
| 551X | May 03, 1804 | S. Houston | Thresher | threshers and thrashers |
| 552X | May 08, 1804 | L. Stevens | Churn | churns |
| 553X | May 08, 1804 | L. Stevens | Corn Sheller | corn shellers |
| 554X | May 10, 1804 | J.D. Staniford, Jr., A.D. Allen | Improvement of the Lantern | lanterns |
| 555X | May 10, 1804 | A.D. Allen | Varnish for writing tablets | |
| 556X | May 10, 1804 | A.D. Allen | Plane for Making Bonnets | splint planes |
| 557X | May 12, 1804 | E. Crafts, Jr. | Furnace for making pot and pearl ashes with the manner of using and the materials of which the same is composed | industrial furnaces |
| 558X | May 16, 1804 | E. Weld | Machine for making salt | salt making apparatus |
| 559X | May 17, 1804 | M. McJames, M. Simon | Cotton Cleaner | miller |
