The New York Stock Exchange is not open on weekends. Stock Exchanges in America, Europe, and Asia follow the typical Monday to Friday schedule. However, in the Middle East the work week typically runs from Sunday through Thursday.
Thomas L. Jennings (1791 â February 12, 1856) was an African-American tradesman and abolitionist in New York City, New York. He operated and owned a tailoring and dry-cleaning business, and, on March 3,1821, he was granted patent 3306x for a dry scrub process as the first African American to be granted a patent.
Thomas Jennings Patent Holder. Thomas Jennings was born in 1791. He started his career as a tailor and eventually opened one of New Yorkâs leading clothing shops. Inspired by frequent requests for cleaning advice, he began researching cleaning solutions. He was 30 years old when he was granted a patent for a dry cleaning process.