| X Patents |
Patents 391 -
405
of 9755
      |
| Number | Date | Patentee | Title | Type |
| 391X | Aug. 02, 1802 | N.H. Forbes | Machine for making nails | nail making machines |
| 392X | Aug. 17, 1802 | J. Templeton | Trigonometrical Quadrant | quadrants |
| 393X | Aug. 24, 1802 | W. Paine | Improvement in a Still | steam stills |
| 394X | Aug. 24, 1802 | E. Putnam | Improvement Called a Fire Stop | carpenter |
| 395X | Aug. 30, 1802 | N. Boureau | Economical House and Ship Steam Kitchens | kitchens |
| 396X | Sep. 03, 1802 | M.C. Groves | Astronomical Quadrant | quadrants |
| 397X | Sep. 04, 1802 | B.S. Walcott | Machine for heading nails | nail making machines |
| 398X | Sep. 07, 1802 | L. Kennedy | Improvement in Fastening, in Raising and Supporting Window Sashes | window sashes |
| 399X | Sep. 13, 1802 | J. Richardson | Evaporating furnace | industrial furnaces |
| 400X | Sep. 24, 1802 | J. Idler | Cotton Press | cotton presses |
| 401X | Oct. 09, 1802 | S. Briggs, Jr. | Steam Engine | steam engines |
| 402X | Oct. 14, 1802 | J.B. Aveilhe | Machine for raising water (perpetual motion) | water elevators |
| 403X | Nov. 29, 1802 | A.W. Chickering | Splitting Skins | splitting and shearing machinery |
| 404X | Nov. 29, 1802 | B. Gorton | Improvement in Extracting Neutral Salts From Alkaline | manufacturing salt |
| 405X | Dec. 03, 1802 | J. Gardiner | Improvement in erecting dry docks | dry docks |
