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This design featured a flat scoop with a handle, which could be held in one hand while sweeping with the other. This basic design laid the foundation for modern dustpans. [3] In 1897, Lloyd P. Ray, an African American inventor, patented an improved dustpan with a more ergonomic handle and a raised edge to prevent debris from spilling out.
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Codocytes, also known as target cells, are red blood cells that have the appearance of a shooting target with a bullseye. In optical microscopy these cells appear to have a dark center (a central, hemoglobinized area) surrounded by a white ring (an area of relative pallor), followed by dark outer (peripheral) second ring containing a band of ...
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NASA spin-off technologies are commercial products and services which have been developed with the help of NASA, through research and development contracts, such as Small Business Innovation Research (SBIR) or STTR awards, licensing of NASA patents, use of NASA facilities, technical assistance from NASA personnel, or data from NASA research.
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related to: long handle dust pan target cell for sale near- 1680 Stringtown Road, Grove City, OH · Directions · (614) 539-4554