| Patents Granted on 1803-12-?? |
Patents 1 -
12
of 12
      |
| Number | Date | Patentee | Title | Type |
| 501X | Dec. 03, 1803 | J. Cist | Improvement in grinding painters' colors, printers' ink, etc. | paint grinding mills |
| 502X | Dec. 06, 1803 | J. Eve | Cotton Gin | cotton gins |
| 503X | Dec. 06, 1803 | P. Earl | Twilling Machine for Pricking Leather for Cards | leatherworker |
| 504X | Dec. 06, 1803 | S. Stewart | Fire Engine | fire engines |
| 505X | Dec. 07, 1803 | M. Otiss, M. Rogers | Nail Machine | nail making machines |
| 506X | Dec. 10, 1803 | J. Curtis, Jr. | Improvement in Window Springs | door and window hardware |
| 507X | Dec. 16, 1803 | E. Richardson | Improvement in still heads and condensors | steam stills |
| 508X | Dec. 16, 1803 | J. Elgar | Nail Machine | nail making machines |
| 509X | Dec. 21, 1803 | D. Buckman | Thresher | threshers and thrashers |
| 510X | Dec. 26, 1803 | J. Beverly | Hydro Mechanical Press | industrial presses |
| 511X | Dec. 30, 1803 | J. Selby | Improvement in Painting Rooms | painter |
| 512X | Dec. 30, 1803 | F. Guy | Improvement in Making Colors for Painting, Printing, Etc. | painter |
