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Year |
Event(s) |
| 1 | 1840 | - Englishmen, John Herschel invents the blueprint.
|
| 2 | 1841 | - John Tyler president of the USA 1841-1845. John Tyler the first vice president to succeed to the presidency due to death of a president.
- Samuel Slocum patents the stapler.
- William H. Harrison president of the USA. William Henry Harrison succumbed to pneumonia 1841.
|
| 3 | 1842 | - Joseph Dart builds the first grain elevator.
- Paving the streets of Cleveland, Ohio commences by laying down planks on the roads.
|
| 4 | 1843 | - Alexander Bain of Scotland, invents the facsimile.
|
| 5 | 1844 | - Englishmen, John Mercer invents mercerized cotton.
|
| 6 | 1845 | - American, Elias Howe invents a sewing machine.
- James Polk president of the USA 1845-1849.
- Robert William Thomson patents the first vulcanised rubber pneumatic tire.
|
| 7 | 1846 | - Dr. William Morton, a Massachusetts dentist, is the first to use anesthesia for tooth extraction.
|
| 8 | 1847 | - Hungarian, Ignaz Semmelweis invents antisceptics.
- Telegraph line installed between Pittsburgh and Cleveland.
|
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1840 - 1848
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