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:
1840s in technology
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1790s
1800s
1810s
1820s
1830s
1840s
1850s
1860s
1870s
1880s
1890s
14th
15th
16th
17th
18th
19th
20th
21st
22nd
23rd
24th
Technology
in the
1840s
decade.
Subcategories
This category has the following 7 subcategories, out of 7 total.
0–9
1842 in technology
(2 C)
1845 in technology
(2 C)
1846 in technology
(2 C)
1847 in technology
(2 C)
1849 in technology
(2 C)
T
1840s in transport
(17 C)
V
Vehicles introduced in the 1840s
(1 C, 1 P)