New Orleans History -- Lake Pontchartrain
Sunday, August 20, 2017
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Venetian blinds were patented by John Hampson in New Orleans in 1841.

Venetian blinds were patented by John Hampson in New Orleans in 1841. Such blinds had existed for a while, but Hampson found a way to keep the slats in one position.

Source: http://www.nortexinfo.net/McDaniel/0821.htm