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19th century patents |
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1800-1849 |
Year |
Date |
Title |
Patentee |
Country |
Patent N° / |
Loc |
PDF |
|
| 1843 | 10-janv | Slide Rule | Smith, John P. | US | US 2907 | US |  |
|
| 1844 | 06-mai | Machine for calculating interest | Hatfield, Jehu | US | US 3574 | US | |
|
| 1849 | 01-mai | Calculator | Haines, W.M. | US | US 6403 | US | |
|
| 1849 | 24-juil | adding figures | Young, S.S. | US | US 6602 | US | |
|
| 1850 | 05-févr | computing machine | Parmelee, D.D. | US | US 7074 | US | |
|
| 1851 | 04-mars | Circular slide rule | John W. Nystrom | US | US 7961 | US | |
|
| 1851 | 02-sept | rules for calculating interest | Young, S.S. | US | US 8329 | US | |
|
| 1854 | 26-sept | Machines for adding numbers | Hatfield, Aaron L, Lewisburgh, Pa. |
US | US 11726 | US | |
|
| 1857 | 24-nov | Arithmometer for Addition | Castle, Orlando L.. | US | US 18875 | US | |
|
| 1857 | 24-nov | Arithmometer | Hill, Thomas | US | US 18692 | US | |
|
| 1857 | 24-nov | Calculating Device | Smith, James D. | US | US 18711 | US | |
|
| 1858 | 28-sept | Machine for Adding Numbers | Newbrough, John B. | US | US 21621 | US | |
|
| 1858 | 26-oct | Arithmetical Proof Rule | Young, S.S. | US | US 21921 | US | |
|
| 1858 | 02-nov | Arithmometer for Addition | Castle, Orlando L.. | US | US 21941 | US | |
|
| 1859 | 09-août | Adding Machine | Campbell, J.T. | US | US 24990 | US | |
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Valéry Monnier
2008