`whenYear` >='-3000'
AND `whenYear` ='1821'
AND `whenmonth` ='3' AND `whenDay` ='3'
ORDER BY `events`.`eventSig` DESC , `whenYear` ASC
LIMIT
0
,
200


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Picture of Thomas Jennings in 1821 was first African American to receive a patent on March 3 His patent was for a dry-cleaning process called dry scouring The first money earned from his patent was spent on legal fee More photos: tco 3S1QYJLhJv tco NcCvIcKMhk
Thomas Jennings
with
Thomas Jennings
was first African American to receive a patent on March 3 His patent was for a dry-cleaning process called dry scouring The first money earned from his patent was spent on legal fee More photos: tco 3S1QYJLhJv tco NcCvIcKMhk
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