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Before Lloyd Ray patented his invention, anyone cleaning a room or a hall simply swept dirt, dust or trash out of a door onto the ground outside or used a piece of paper in order to collect it. Ray created a device with a metal collection plate attached to a short wooden handle in which trash could be swept without getting one's hands dirty.
 The device was patented on August 3, 1897 and is called a dustpan.
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- Alcorn, George
- Banneker, Benjamin
- Bath, Patricia
- Beard, Andrew
- Benjamin, Miriam
- Blair, Henry
- Boone, Sarah
- Boykin, Otis
- Bradley, Benjamin
- Brooks, Charles
- Brown, Henry
- Carruthers, George
- Carver, George Washington
- Cherry, Matthew
- Crosthwait, David
- Crum, George
- Davidson, Shelby
- Dean, Mark
- Dickinson, Joseph
- Downing, Philip
- Drew, Charles
- Elkins, Thomas
- Emeagwali, Philip
- Faulkner, Henry
- Fisher, David
- Forten, James
- Goode, Sarah
- Gourdine, Meredith
- Grant, George
- Hall, Lloyd
- Hawkins, Joseph
- Jennings, Thomas
- Johnson, Jack
- Johnson, Lonnie
- Johnson, Willis
- Jones, Fred
- Joyner, Marjorie
- Julian, Percy
- Just, Ernest
- Latimer, Lewis
- Lee, Joseph
- Lewis, Edward.
- Love, John
- Matzeliger, Jan
- McCoy, Elijah
- McCree, Daniel
- Mensah, Thomas
- Montgomery, Ben
- Morgan, Garrett
- Murray, George
- Parker, John P.
- Pelham, Robert
- Purvis, William.
- Ray, Lloyd
- Reboucas, Andre
- Richardson, Albert
- Rillieux, Norbert
- Spikes, Richard
- Stewart, Thomas
- Temple, Lewis
- Thomas, Valerie
- Thornton, Benjamin
- Walker, Madame C. J.
- West, James
- Williams, Daniel Hale
- Woods, Granville
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