The ten millionth patent, a specialized laser radar, was issued by the US Patent and Trademark Office.
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In Atlanta, Georgia, legislation passed that made pinball machines illegal in the city.
President Lincoln signed an Act that made slavery illegal in US territories.
Father's Day was celebrated for the first time in the US.
The TIROS-7 meteorological satellite was launched atop a Thor-Delta rocket.
Drug lord Pablo Escobar handed himself into the police.
