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Thomas L. Jennings (c. 1791 – February 12, 1859) was an African-American inventor, tradesman, entrepreneur, and abolitionist in New York City, New York.He has the distinction of being the first African-American patent-holder in history; he was granted the patent in 1821 for his novel method of dry cleaning. [1]
Dry cleaning is any cleaning process for clothing and textiles using a solvent other than water. Clothes are instead soaked in a water-free liquid solvent (usually non-polar , as opposed to water which is a polar solvent ).
A laundry symbol, also called a care symbol, is a pictogram indicating the manufacturer's suggestions as to methods of washing, drying, dry-cleaning and ironing clothing. Such symbols are written on labels, known as care labels or care tags, attached to clothing to indicate how a particular item should best be cleaned. While there are ...
Here's an inside look on how the mysterious cleaning method unfolds. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800-290-4726 more ways to reach us ...
However, Jeffersonians saw this bank as an unconstitutional expansion of federal power, so when its charter expired in 1811, the Jeffersonian-dominated Congress did not renew it. [26] State legislatures were persuaded to charter their own banks to continue helping merchants, artisans, and farmers who needed loans, and, by 1816, there were 246 ...
Dry cleaning refers to any process which uses a chemical solvent other than water. [12] The solvent used is typically tetrachloroethylene (perchloroethylene), which the industry calls "perc". [ 13 ] [ 14 ] It is used to clean delicate fabrics that cannot withstand the rough and tumble of a washing machine and clothes dryer ; it can also obviate ...
The Chinese Hand Laundry Alliance (CHLA) was a labor organization [1] formed in 1933 to protect the civil rights of overseas Chinese living in North America [2] [3] and "to help Chinese laundry workers break their isolation in American society."
Over fifty years ago on June 17, 1971, President Richard Nixon declared to the Washington press corps that America had a new enemy—narcotics. “America’s public enemy number one,” Nixon ...