The ten millionth patent, a specialized laser radar, was issued by the US Patent and Trademark Office.
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Louis IV was crowned king of West Francia.
The USS Kearsarge sank the CSS Alabama off the coast of Cherbourg, France.
President Lincoln signed an Act that made slavery illegal in US territories.
Thousands of pigeons went missing after a freak weather incident.
Drug lord Pablo Escobar handed himself into the police.
